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The combination of that yellow with remaining blue light appears white to the eye. However, using different phosphors fluorescent materials it also became possible to instead produce green and red light through fluorescence. The resulting mixture of red, green and blue is not only perceived by humans as white light but is superior for illumination in terms of color rendering , whereas one cannot appreciate the color of red or green objects illuminated only by the yellow and remaining blue wavelengths from the YAG phosphor.
The first white LEDs were expensive and inefficient. However, the light output of LEDs has increased exponentially , with a doubling occurring approximately every 36 months since the s similar to Moore's law. The latest research and development has been propagated by Japanese manufacturers such as Panasonic , Nichia , etc. Samsung , Solstice , Kingsun, and countless others. Light output and efficiency of blue and near-ultraviolet LEDs rose as the cost of reliable devices fell.
This led to relatively high-power white-light LEDs for illumination, which are replacing incandescent and fluorescent lighting. It can be encapsulated using resin, silicone, or epoxy containing powdered Cerium doped YAG phosphor.
Encapsulation is performed after probing, dicing, die transfer from wafer to package, and wire bonding or flip chip mounting, perhaps using Indium tin oxide , a transparent electrical conductor. Remote phosphor LED light bulbs may have behind the plastic cover a white plastic reflector. Others shape the remote phosphor as a dome, or sphere, and place it atop a single PCB containing blue LEDs; this assembly may be behind a frosted glass or plastic cover.
The PCB is often installed atop a pillar, which is lined with white plastic. A P-N junction can convert absorbed light energy into a proportional electric current. The same process is reversed here i. This phenomenon is generally called electroluminescence , which can be defined as the emission of light from a semiconductor under the influence of an electric field.
The charge carriers recombine in a forward-biased P-N junction as the electrons cross from the N-region and recombine with the holes existing in the P-region.
Free electrons are in the conduction band of energy levels, while holes are in the valence energy band.
Thus the energy level of the holes is less than the energy levels of the electrons. Some portion of the energy must be dissipated to recombine the electrons and the holes. This energy is emitted in the form of heat and light. The electrons dissipate energy in the form of heat for silicon and germanium diodes but in gallium arsenide phosphide GaAsP and gallium phosphide GaP semiconductors, the electrons dissipate energy by emitting photons.
If the semiconductor is translucent, the junction becomes the source of light as it is emitted, thus becoming a light-emitting diode. However, when the junction is reverse biased, the LED produces no light and—if the potential is great enough, the device is damaged.
The LED consists of a chip of semiconducting material doped with impurities to create a p-n junction.
As in other diodes, current flows easily from the p-side, or anode , to the n-side, or cathode, but not in the reverse direction. Charge-carriers— electrons and holes —flow into the junction from electrodes with different voltages. When an electron meets a hole, it falls into a lower energy level and releases energy in the form of a photon. The wavelength of the light emitted, and thus its color, depends on the band gap energy of the materials forming the p-n junction.
In silicon or germanium diodes, the electrons and holes usually recombine by a non-radiative transition , which produces no optical emission, because these are indirect band gap materials. The materials used for the LED have a direct band gap with energies corresponding to near-infrared, visible, or near-ultraviolet light. LED development began with infrared and red devices made with gallium arsenide. Advances in materials science have enabled making devices with ever-shorter wavelengths, emitting light in a variety of colors.
LEDs are usually built on an n-type substrate, with an electrode attached to the p-type layer deposited on its surface. P-type substrates, while less common, occur as well. Bare uncoated semiconductors such as silicon exhibit a very high refractive index relative to open air, which prevents passage of photons arriving at sharp angles relative to the air-contacting surface of the semiconductor due to total internal reflection. This property affects both the light-emission efficiency of LEDs as well as the light-absorption efficiency of photovoltaic cells.
The refractive index of silicon is set at 3. In general, a flat-surface uncoated LED semiconductor chip emits light only perpendicular to the semiconductor's surface, and a few degrees to the side, in a cone shape referred to as the light cone , cone of light ,  or the escape cone.
When the critical angle is exceeded, photons no longer escape the semiconductor but are, instead, reflected internally inside the semiconductor crystal as if it were a mirror. Internal reflections can escape through other crystalline faces if the incidence angle is low enough and the crystal is sufficiently transparent to not re-absorb the photon emission.
But for a simple square LED with degree angled surfaces on all sides, the faces all act as equal angle mirrors. In this case, most of the light can not escape and is lost as waste heat in the crystal.
A convoluted chip surface with angled facets similar to a jewel or fresnel lens can increase light output by distributing light perpendicular to the chip surface and far to the sides of the photon emission point. The ideal shape of a semiconductor with maximum light output would be a microsphere with the photon emission occurring at the exact center, with electrodes penetrating to the center to contact at the emission point.
All light rays emanating from the center would be perpendicular to the entire surface of the sphere, resulting in no internal reflections. A hemispherical semiconductor would also work, with the flat back-surface serving as a mirror to back-scattered photons. After the doping of the wafer , it is usually cut apart into individual dies. Each die is commonly called a chip. Many LED semiconductor chips are encapsulated or potted in clear or colored molded plastic shells. The plastic shell has three purposes:.
The third feature helps to boost the light emission from the semiconductor by acting as a diffusing lens, emitting light at a much higher angle of incidence from the light cone than the bare chip would alone. Typical indicator LEDs are designed to operate with no more than 30—60 milliwatts mW of electrical power. These LEDs used much larger semiconductor die sizes to handle the large power inputs.
Also, the semiconductor dies were mounted onto metal slugs to allow for greater heat dissipation from the LED die. One of the key advantages of LED-based lighting sources is high luminous efficacy.
White LEDs quickly matched and overtook the efficacy of standard incandescent lighting systems. As of [update] , Philips had achieved the following efficacies for each color. The lumen-per-watt efficacy value includes characteristics of the human eye and is derived using the luminosity function. These efficiencies are for the light-emitting diode only, held at low temperature in a lab. Since LEDs installed in real fixtures operate at higher temperature and with driver losses, real-world efficiencies are much lower.
Efficiency droop is the decrease in luminous efficiency of LEDs as the electric current increases above tens of milliamperes. This effect was initially thought related to elevated temperatures. Scientists proved the opposite is true: In addition to being less efficient, operating LEDs at higher electric currents creates higher heat levels, which can compromise LED lifetime.
Instead of increasing current levels, luminance is usually increased by combining multiple LEDs in one bulb. Solving the problem of efficiency droop would mean that household LED light bulbs would need fewer LEDs, which would significantly reduce costs.
Researchers at the U. Naval Research Laboratory have found a way to lessen the efficiency droop. They found that the droop arises from non-radiative Auger recombination of the injected carriers. They created quantum wells with a soft confinement potential to lessen the non-radiative Auger processes.
Researchers at Taiwan National Central University and Epistar Corp are developing a way to lessen the efficiency droop by using ceramic aluminium nitride AlN substrates, which are more thermally conductive than the commercially used sapphire.
The higher thermal conductivity reduces self-heating effects. Solid-state devices such as LEDs are subject to very limited wear and tear if operated at low currents and at low temperatures. Typical lifetimes quoted are 25, to , hours, but heat and current settings can extend or shorten this time significantly.
The most common symptom of LED and diode laser failure is the gradual lowering of light output and loss of efficiency.
Sudden failures, although rare, can also occur. Early red LEDs were notable for their short service life. With the development of high-power LEDs, the devices are subjected to higher junction temperatures and higher current densities than traditional devices.
This causes stress on the material and may cause early light-output degradation. Whereas in most previous sources of light incandescent lamps, discharge lamps, and those that burn combustible fuel, e.
At these temperatures, relatively little heat is lost by radiation, which means that the light beam generated by an LED is cool. The waste heat in a high-power LED which as of can be less than half the power that it consumes is conveyed by conduction through the substrate and package of the LED to a heat sink , which gives up the heat to the ambient air by convection.
Medium-power LEDs are often designed to solder directly to a printed circuit board that contains a thermally conductive metal layer. High-power LEDs are packaged in large-area ceramic packages that attach to a metal heat sink —the interface being a material with high thermal conductivity thermal grease , phase-change material , thermally conductive pad , or thermal adhesive.
If an LED-based lamp is installed in an unventilated luminaire , or a luminaire is located in an environment that does not have free air circulation, the LED is likely to overheat, resulting in reduced life or early catastrophic failure. LEDs used in outdoor applications, such as traffic signals or in-pavement signal lights, and in climates where the temperature within the light fixture becomes very high, could experience reduced output or even failure.
However, they may be more susceptible to frost and snow buildup than incandescent lamps,  so some LED lighting systems have been designed with an added heating circuit. Additionally, research has developed heat sink technologies that transfer heat produced within the junction to appropriate areas of the light fixture. Conventional LEDs are made from a variety of inorganic semiconductor materials. The following table shows the available colors with wavelength range, voltage drop, and material:.
The first blue-violet LED using magnesium-doped gallium nitride was made at Stanford University in by Herb Maruska and Wally Rhines, doctoral students in materials science and engineering. In , the year after Maruska left for Stanford, his RCA colleagues Pankove and Ed Miller demonstrated the first blue electroluminescence from zinc-doped gallium nitride, though the subsequent device Pankove and Miller built, the first actual gallium nitride light-emitting diode, emitted green light.
Patent US A and today, magnesium-doping of gallium nitride remains the basis for all commercial blue LEDs and laser diodes. In the early s, these devices were too dim for practical use, and research into gallium nitride devices slowed.
In August , Cree introduced the first commercially available blue LED based on the indirect bandgap semiconductor, silicon carbide SiC.
In the late s, key breakthroughs in GaN epitaxial growth and p-type doping  ushered in the modern era of GaN-based optoelectronic devices. Building upon this foundation, Theodore Moustakas at Boston University patented a method for producing high-brightness blue LEDs using a new two-step process.
Nakamura was awarded the Millennium Technology Prize for his invention. By the late s, blue LEDs became widely available. They have an active region consisting of one or more InGaN quantum wells sandwiched between thicker layers of GaN, called cladding layers. Ultraviolet LEDs in a range of wavelengths are becoming available on the market.
Unlike dedicated-color LEDs, however, these obviously do not produce pure wavelengths. Moreover, such modules as commercially available are often not optimized for smooth color mixing.
One is to use individual LEDs that emit three primary colors  —red, green, and blue—and then mix all the colors to form white light. The other is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, much in the same way a fluorescent light bulb works.
The 'whiteness' of the light produced is essentially engineered to suit the human eye. The yellow phosphor in LEDs is Cerium doped YAG crystal, in powder form and may be suspended in plastic, epoxy, synthetic rubber or silicone. Touching bare LEDs using synthetic rubber or silicone can damage the delicate wire bonds from LED to package or the LED itself, so they may be protected by a plastic or glass cover, such as in the LED flash in smartphones.
Because of metamerism , it is possible to have quite different spectra that appear white. However, the appearance of objects illuminated by that light may vary as the spectrum varies, this is the issue of color rendition, quite separate from color temperature, where a really orange or cyan object could appear with the wrong color and much darker as the LED or phosphor does not emit the wavelength it reflects.
The best color rendition CFL and LEDs use a mix of phosphors, resulting in less efficiency but better quality of light. Though incandescent halogen lamps have a more orange color temperature, they are still the best easily available artificial light sources in terms of color rendition. White light can be formed by mixing differently colored lights; the most common method is to use red, green, and blue RGB. Because these need electronic circuits to control the blending and diffusion of different colors, and because the individual color LEDs typically have slightly different emission patterns leading to variation of the color depending on direction even if they are made as a single unit, these are seldom used to produce white lighting.
Nonetheless, this method has many applications because of the flexibility of mixing different colors,  and in principle, this mechanism also has higher quantum efficiency in producing white light.
There are several types of multicolor white LEDs: Several key factors that play among these different methods include color stability, color rendering capability, and luminous efficacy. Often, higher efficiency means lower color rendering, presenting a trade-off between the luminous efficacy and color rendering. However, although tetrachromatic white LEDs have excellent color rendering capability, they often have poor luminous efficacy.
One of the challenges is the development of more efficient green LEDs. The theoretical maximum for green LEDs is lumens per watt but as of few green LEDs exceed even lumens per watt. The blue and red LEDs approach their theoretical limits.
Multicolor LEDs offer not merely another means to form white light but a new means to form light of different colors. Most perceivable colors can be formed by mixing different amounts of three primary colors. This allows precise dynamic color control. As more effort is devoted to investigating this method, multicolor LEDs should have profound influence on the fundamental method that we use to produce and control light color.
However, before this type of LED can play a role on the market, several technical problems must be solved. These include that this type of LED's emission power decays exponentially with rising temperature,  resulting in a substantial change in color stability. Such problems inhibit and may preclude industrial use. Thus, many new package designs aimed at solving this problem have been proposed and their results are now being reproduced by researchers and scientists.
However multicolor LEDs without phosphors can never provide good quality lighting because each LED is a narrow band source see graph. LEDs without phosphor while a poorer solution for general lighting are the best solution for displays, either backlight of LCD, or direct LED based pixels. Feedback loop systems are used for example with color sensors, to actively monitor and control the color output of multiple color mixing LEDs.
Depending on the original LED's color, various color phosphors are used. Using several phosphor layers of distinct colors broadens the emitted spectrum, effectively raising the color rendering index CRI. Phosphor-based LEDs have efficiency losses due to heat loss from the Stokes shift and also other phosphor-related issues. Their luminous efficacies compared to normal LEDs depend on the spectral distribution of the resultant light output and the original wavelength of the LED itself.
For example, the luminous efficacy of a typical YAG yellow phosphor based white LED ranges from 3 to 5 times the luminous efficacy of the original blue LED because of the human eye's greater sensitivity to yellow than to blue as modeled in the luminosity function. Due to the simplicity of manufacturing, the phosphor method is still the most popular method for making high-intensity white LEDs. The design and production of a light source or light fixture using a monochrome emitter with phosphor conversion is simpler and cheaper than a complex RGB system, and the majority of high-intensity white LEDs presently on the market are manufactured using phosphor light conversion.
Among the challenges being faced to improve the efficiency of LED-based white light sources is the development of more efficient phosphors. Currently, in the area of phosphor LED development, much effort is being spent on optimizing these devices to higher light output and higher operation temperatures.
For instance, the efficiency can be raised by adapting better package design or by using a more suitable type of phosphor. Conformal coating process is frequently used to address the issue of varying phosphor thickness. Alternatively, the LED might be paired with a remote phosphor, a preformed polycarbonate piece coated with the phosphor material. Remote phosphors provide more diffuse light, which is desirable for many applications. Remote phosphor designs are also more tolerant of variations in the LED emissions spectrum.
Cu, Al that emits green. This is a method analogous to the way fluorescent lamps work. Ce phosphor, as the Stokes shift is larger, so more energy is converted to heat, but yields light with better spectral characteristics, which render color better. Due to the higher radiative output of the ultraviolet LEDs than of the blue ones, both methods offer comparable brightness.
A concern is that UV light may leak from a malfunctioning light source and cause harm to human eyes or skin. Another method used to produce experimental white light LEDs used no phosphors at all and was based on homoepitaxially grown zinc selenide ZnSe on a ZnSe substrate that simultaneously emitted blue light from its active region and yellow light from the substrate. A new style of wafers composed of gallium-nitride-on-silicon GaN-on-Si is being used to produce white LEDs using mm silicon wafers.
This avoids the typical costly sapphire substrate in relatively small or mm wafer sizes. Manufacturing large sapphire material is difficult, while large silicon material is cheaper and more abundant. LED companies shifting from using sapphire to silicon should be a minimal investment. In an organic light-emitting diode OLED , the electroluminescent material composing the emissive layer of the diode is an organic compound.
The organic material is electrically conductive due to the delocalization of pi electrons caused by conjugation over all or part of the molecule, and the material therefore functions as an organic semiconductor. The potential advantages of OLEDs include thin, low-cost displays with a low driving voltage, wide viewing angle, and high contrast and color gamut.
Quantum dots QD are semiconductor nanocrystals with optical properties that let their emission color be tuned from the visible into the infrared spectrum. This provides more color options and better color rendering than white LEDs since the emission spectrum is much narrower, characteristic of quantum confined states. There are two types of schemes for QD excitation. The other is direct electrical excitation first demonstrated by Alivisatos et al. One example of the photo-excitation scheme is a method developed by Michael Bowers, at Vanderbilt University in Nashville, involving coating a blue LED with quantum dots that glow white in response to the blue light from the LED.
This method emits a warm, yellowish-white light similar to that made by incandescent light bulbs. In February scientists at PlasmaChem GmbH were able to synthesize quantum dots for LED applications and build a light converter on their basis, which was able to efficiently convert light from blue to any other color for many hundred hours.
A layer of quantum dots is sandwiched between layers of electron-transporting and hole-transporting materials. An applied electric field causes electrons and holes to move into the quantum dot layer and recombine forming an exciton that excites a QD.
This scheme is commonly studied for quantum dot display. The tunability of emission wavelengths and narrow bandwidth is also beneficial as excitation sources for fluorescence imaging.
In February , a luminous efficacy of lumens of visible light per watt of radiation not per electrical watt and warm-light emission was achieved by using nanocrystals. The main types of LEDs are miniature, high-power devices, and custom designs such as alphanumeric or multicolor. They usually do not use a separate heat sink. The small size sets a natural upper boundary on power consumption due to heat caused by the high current density and need for a heat sink.
Often daisy chained as used in LED tapes. Common package shapes include round, with a domed or flat top, rectangular with a flat top as used in bar-graph displays , and triangular or square with a flat top. The encapsulation may also be clear or tinted to improve contrast and viewing angle. It is made of two-dimensional 2-D flexible materials.
It is three atoms thick, which is 10 to 20 times thinner than three-dimensional 3-D LEDs and is also 10, times smaller than the thickness of a human hair.
These 2-D LEDs are going to make it possible to create smaller, more energy-efficient lighting, optical communication and nano lasers. Some can emit over a thousand lumens. Since overheating is destructive, the HP-LEDs must be mounted on a heat sink to allow for heat dissipation. For each half-cycle, part of the LED emits light and part is dark, and this is reversed during the next half-cycle.
Flashing LEDs are used as attention seeking indicators without requiring external electronics. In diffused lens LEDs, this circuit is visible as a small black dot.
Most flashing LEDs emit light of one color, but more sophisticated devices can flash between multiple colors and even fade through a color sequence using RGB color mixing.
There are two types of these. One type consists of two dies connected to the same two leads antiparallel to each other. Current flow in one direction emits one color, and current in the opposite direction emits the other color. The other type consists of two dies with separate leads for both dies and another lead for common anode or cathode so that they can be controlled independently.
Each emitter is connected to a separate lead so they can be controlled independently. A four-lead arrangement is typical with one common lead anode or cathode and an additional lead for each color. Others, however, have only two leads positive and negative and have a built-in electronic control unit.
Decorative-multicolor LEDs incorporate several emitters of different colors supplied by only two lead-out wires. Colors are switched internally by varying the supply voltage. Alphanumeric LEDs are available in seven-segment , starburst , and dot-matrix format. Seven-segment displays handle all numbers and a limited set of letters.
Starburst displays can display all letters. Dot-matrix displays typically use 5x7 pixels per character. Seven-segment LED displays were in widespread use in the s and s, but rising use of liquid crystal displays , with their lower power needs and greater display flexibility, has reduced the popularity of numeric and alphanumeric LED displays. In addition to power and ground, these provide connections for data-in, data-out, and sometimes a clock or strobe signal. These are connected in a daisy chain , with the data in of the first LED sourced by a microprocessor, which can control the brightness and color of each LED independently of the others.
They are used where a combination of maximum control and minimum visible electronics are needed such as strings for Christmas and LED matrices. Some even have refresh rates in the kHz range, allowing for basic video applications. These devices are also known by their part number WS being the most common or a brand name such as NeoPixel. An LED filament consists of multiple LED chips connected in series on a common longitudinal substrate that forms a thin rod reminiscent of a traditional incandescent filament.
The filaments require a rather high voltage to light to nominal brightness, allowing them to work efficiently and simply with mains voltages. Often a simple rectifier and capacitive current limiting are employed to create a low-cost replacement for a traditional light bulb without the complexity of the low voltage, high current converter that single die LEDs need. The current—voltage characteristic of an LED is similar to other diodes, in that the current is dependent exponentially on the voltage see Shockley diode equation.
This means that a small change in voltage can cause a large change in current. The typical solution is to use constant-current power supplies to keep the current below the LED's maximum current rating. Since most common power sources batteries, mains are constant-voltage sources, most LED fixtures must include a power converter, at least a current-limiting resistor.
However, the high resistance of three-volt coin cells combined with the high differential resistance of nitride-based LEDs makes it possible to power such an LED from such a coin cell without an external resistor. As with all diodes, current flows easily from p-type to n-type material. If the reverse voltage grows large enough to exceed the breakdown voltage , a large current flows and the LED may be damaged.
If the reverse current is sufficiently limited to avoid damage, the reverse-conducting LED is a useful noise diode. In general, laser safety regulations—and the "Class 1", "Class 2", etc.
While LEDs have the advantage over fluorescent lamps that they do not contain mercury , they may contain other hazardous metals such as lead and arsenic. Regarding the toxicity of LEDs when treated as waste, a study published in stated: In a statement of the American Medical Association AMA concerning the possible influence of blueish street lighting on the sleep-wake cycle of city-dwellers led to some controversy.
So far high-pressure sodium lamps HPS with an orange light spectrum were the most efficient light sources commonly used in street-lighting. These are even more efficient and mostly emit blue-rich light with a higher correlated color temperature CCT.
Since light with a high CCT resembles daylight it is thought that this might have an effect on the normal circadian physiology by suppressing melatonin production in the human body. There have been no relevant studies as yet and critics claim exposure levels are not high enough to have a noticeable effect.
The low energy consumption , low maintenance and small size of LEDs has led to uses as status indicators and displays on a variety of equipment and installations. Large-area LED displays are used as stadium displays, dynamic decorative displays, and dynamic message signs on freeways. Thin, lightweight message displays are used at airports and railway stations, and as destination displays for trains, buses, trams, and ferries. One-color light is well suited for traffic lights and signals, exit signs , emergency vehicle lighting , ships' navigation lights or lanterns chromacity and luminance standards being set under the Convention on the International Regulations for Preventing Collisions at Sea , Annex I and the CIE and LED-based Christmas lights.
In cold climates, LED traffic lights may remain snow-covered. Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in brake lights for cars' high-mounted brake lights , trucks, and buses, and in turn signals for some time. However, many vehicles now use LEDs for their rear light clusters.
The use in brakes improves safety, due to a great reduction in the time needed to light fully, or faster rise time, up to 0. If you prefer not to leave a spare key to anyone, at least hide it somewhere outside your house. You could hang a combination key lock box on the door handle or hide it in between large stones or bricks behind a bush.
Just make sure not to hide it in obvious places such as underneath the doormat. Houses usually have more than one door. If the front door is locked, try checking the back door. If you leave in an apartment block, call your landlord or the building supervisor. They usually have copies of the keys of their units. If you lost your keys somewhere, make sure to have a door lock security technician in Singapore change your locks within 24 hours.
Before you will actually need one, find a trustee local locksmith in your area and save their contact number on your phone. This advanced planning will guarantee your safety in times of need. You should also expect for the locksmith to ask for your identification.
A legitimate locksmith Singapore will want to confirm your residency before starting any work. If not all, most locksmiths in Singapore arrive in service vehicles. Pay attention to their vehicle. Legitimate ones have their company name and logo clearly marked on their service car.
A professional and skilful locksmith offer several options to unlock a lock. You can get back in without breaking anything. Working with your wedding florist in Singapore to come up with designs for the floral decor in your wedding venue is a fantastic idea for couples who want to add their personal touch to the wedding flowers.
Before you go about selecting the types of flowers for your bridal bouquet and floral decor, however, you need to be familiar with some of the common floral arrangements used in weddings and other unusual styles you might want to try. This type of floral decor is recommended by the wedding florist in Singapore to couples who want to use monochrome flowers, but this can also be used with any color combination. The wedding flowers, mostly dahlia, lily, rose and tuberose, are arranged to form the shape of an ellipse.
The wedding flowers are arranged so that there is no space visible in between them, including the stems. The flowers are highlighted by cutting the stems to make the flowers appear as if they are sitting on the surface of the container. The flowers at the center are slightly taller than the rest, but the stems should also be hidden, creating a look that gives the impression of a bridal bouquet stuck in a small container.
Besides the shape of the floral decor, you can also experiment with the color scheme, by using dark vibrant colors in combination with a few greens and light-colored varieties. This is perfect for color-themed weddings. This floral decor will make use of the tallest wedding flowers available, such as carnation, rose, and tulips, but will also include shorter flowers as fillers to create balance. Any type of color combination or flowers can be used for this versatile floral decor.
This type of floral decor will look like the bridal bouquet, but it also lends an informal look to the piece. To create a dramatic effect, pick colors of the same shade to balance the light and dark colors. If you want to go for an all-red floral floral decoration for marriage ceremony in Singapore for example, select shades close to red, remove the leaves, and then place the tallest flower at the center.
Wedding flowers are placed in shallow containers and arranged so that they all look even, except for a single flower that will serve as a focal point. Another variety of the horizontal floral arrangement places flowers as if in a zig zag pattern. Most of the flowers used for this type of floral decor are roses and other fragrant types. This floral decor is all about height.
The wedding florist will provide you with long-stemmed flowers such as gladiola. The long-stemmed flowers are spread evenly and then filled in with short-stemmed varieties. For couples who love the look of tall flower stems, the wedding florist in Singapore will recommend this style.
The wedding flowers are arranged to create a triangular shape, with shorter stems at the sides, and the tallest flowers in the center. Also known as ikebana, this type of floral decor is best appreciated when placed near walls. It includes not just wedding flowers, but stems, leaves, and twigs to create a natural and simple look. The wedding florist might suggest this to couples who do not want to use a lot of floral decor in the venue. The wedding florist in Singapore will arrange the wedding flowers to imitate the shape of the crescent moon.
Also called the C-type, the best flowers for this type of floral decor should have flexible stems and includes green leaves as fillers. To add more drama to the piece, ask your wedding florist like https: They can also be arranged horizontally or vertically depending on the shape of the basket. The wedding flowers are usually large in size and have leaves on them as fillers. Usually placed on walls, wreaths can sometimes be used as table centerpieces for the wedding venue.
The wreath is a circular garland of wedding flowers, foliage, and a few trinkets. The tallest and brightly-colored wedding flowers are placed in the center of the container, while ones with the shortest stems are placed near the edges.
Even the stems and leaves are shaped and cut to achieve a dense look. This piece is usually placed near hallways during the wedding celebration. As the name implies, this floral decor uses fewer wedding flowers than those listed here. Often, it also includes more greens and stems like the linear floral arrangement. The wedding flowers used still have a lot of leaves and stems on them to achieve a bushy look.
You can place this type of floral decor along the aisle or the hallways to make the place look dramatic. The most commonly used flowers for these floral arrangements include rose, tulip, calla lily, lily of the valley, hydrangea, peony, ranunculus, stephanotis, lily, sweet peas, gardenia, chrysanthemum, narcissus, daisy, lilac, and orchids.
However, that does not mean you should limit yourself to these common flowers. Ask your wedding florist about the availability of some rare varieties before doing a mockup arrangement of the floral arrangements listed above. One important step to protect your brand in Singapore is by applying for a trademark registration at the Intellectual Property Office of Singapore IPOS , the Government agency that handles all issues regarding intellectual property rights in the country.
A trademark can be protected from copycats and impostors that might try to take advantage of the success of your brand and confuse the consumers with a similar brand or logo. Once the application to register trademark has been approved, the protection is only extended, however, in the territory it was registered in. Is there a way for companies in Singapore to protect their registered mark outside the country?
And can companies outside Singapore apply for trademark registration in the country? Fortunately, Singapore is a signatory to various treaties and agreements on intellectual property rights, including the Madrid System. Simply put, the Madrid System is a centralized trademark registration system that will facilitate an easier filing of trademark owners from different member countries to register TM in several jurisdictions.
Because a registered mark is territorial in nature, it would be inconvenient for companies to submit applications individually in several territories. With the Madrid System, an applicant will only have to pay a single fee for a single application using three common languages, but the examination process still follows the procedure in each territory.
Companies outside the country seeking to protect service mark by registering now in Singapore can make use of the Madrid system for filing. In Singapore, all trademark registration applications, including those that wish to take advantage of the Madrid System, are handled by the IPOS.
You can only apply for international trademark registration once it is a registered mark in its country of origin. For companies outside Singapore, their application for trademark protection in their respective countries should already have been approved; while for companies in Singapore, the IPOS must have already granted your trademark registration certificate before you can apply internationally.
The basic registration will serve as a basis for the international application. International trademark applications will go through the same basic application process as the local registration and are published in both the Trade Marks Journal and the International Registrations filed under the Madrid Protocol.
Once you have registered your trademark domestically, the application and other requirements must be submitted to the office of origin to certify the application before it is submitted to the World Intellectual Property Organization WIPO. The application form is available in three languages and can be submitted electronically to the local office. You might have already done this with the domestic trademark registration, so this should be easy. You will be notified of any changes, objections, or other issues in your application and given sufficient time to address such.
The Madrid System is an easy solution for companies to obtain protection in several markets. Applicants need only a single application in one of the three languages and pay one set of fees to register trademark. Trademark owners in their respective countries can easily obtain an international trademark registration in a simplified and centralized process called designation. This means that if a company outside Singapore wishes to register TM in the country, all they must do is to designate Singapore as a new jurisdiction.
The inspection, examination, and objection processes are still the same in each respective member country, but the trademark owner can choose to file a single application for one or more territories at the same time by paying only a single set of fees. If there are changes to the details of the application after the trademark registration has been approved, a single, centralized process for an update is all that is needed across all the jurisdictions the owner has applied to.
One thing that registered mark owners should be aware of before filing is that the Madrid System might refuse, cancel or withdraw your application if the basic application is canceled or withdrawn within five years of the date of registration. If your company for example, has registered for several applications, a cancelation of one in your local registrations will also cancel its equivalent international registration.
Furthermore, if your entire basic application is rejected, then all international applications are also rejected. Applicants, however, can use the transformation option to avoid such incidents called the central attack, but it will cost more than the regular process. The transformation application will indicate that the registration date is the date for the international registration instead of the basic registration date. How many consumer emails and requests have you received today, and how many of them have you responded to?
This integration provides fast and accurate sales reports and turns raw figures into centralized data that everyone in your enterprise can view and access. Here are four cloud CRM reports that your company here in Singapore should always have on-hand for better customer service support. If this happens, it may be necessary to schedule your support team to work on weekends.
Another example is the sudden increase of requests overnight because of an effective email marketing campaign. So, next time you send out another marketing campaign, you already know you need to schedule more staff the next day to answer customer requests in a timely manner. This sales management report will let you know the number of requests each of your support staff was able to close. With this data, you will be able to gauge the performance of every agent you have, providing you an idea how efficient each of your agents is and how many customer requests they handle in an average.
However, not all agents who have answered more requests mean they are great agents. An easy way to solve this issue is to automatically allocate the next pending request to the next available staff, so all received inquiry emails or calls are distributed equally among your support team members.
Another thing is when you notice that an agent is handling too few requests. It could be that the agent is struggling. If so, then you know you need to consider conducting a seminar or training session for the team. According to e-commerce experts, the major factor to excellent customer service is being able to resolve issues and address concerns quickly—the reason why this report exists.
Average time of respond is measured from the moment the request was sent by the consumer to the time a support agent was able to send back his reply to the request. The shorter time the agent was able to respond to the customer, the better service he delivers. If the CRM system reports show that it takes so much time to respond to a request, it could be because the agents or the right department does not receive the requests and that the delay could be due to the action of having to reroute the requests to the right personnel.
Another possible reason is that the responses itself are taking too long to be sent. Are the support team members creating the reply from scratch? Know that composing lengthy emails is time consuming and can affect your average response speed. This is where CrystalDash in Singapore comes in handy. This customer relationship management software can automate customer emails in a way that the same agent will handle the same customer requests to avoid confusion and delay.
For example, a support staff responds to a request and then the customer replies again, the same staff will receive the customer reply and handle the request until it is resolved. Another way to use CRM software is to create canned email messages that all your agents can use, so they can respond to requests quickly. This report will show how much time it usually takes for your staff to resolve an issue or request from the customer.
Your consumers here in Singapore expect not only fast response time from you, but also quick resolution to their queries. For this report, you want to see a decline in the length of time needed for your agents to complete requests.
If you notice a consistent increase in time, it could mean that your staff is in need of additional training. When there is so much information available, you can easily get distracted by reading the less important sales management reports.
And there is no reason of keeping data without knowing its relevance to your business. The reason why you need these reports is to for you to make an educated decision every time and help your team to be more productive at work. By taking advantage of report generators of your cloud CRM, you can effortlessly keep track of employee productivity and customer satisfaction, which both contributes to a better bottom line.
Most of these are already used in high-traffic areas such as offices, hotels, hospitals, educational institutions, and government agencies in Singapore. One of the most advanced door security system is the biometric door access system, but how does it compare to other electronic locking systems?
The biometric door access system is considered relatively new compared to the other locking systems on this list, but there are various authentication methods available for you that you can inquire about from your door access system provider in Singapore.
What makes the biometric door access the most effective security system of secure office in Singapore is that there is no need to remember passwords or numerical codes similar to that used in the pin access door system and to scan magnetic cards used for card access door systems, which can be lost or stolen. Also called biometric thumbprint, the primary authentication method used for this is the fingerprints of the personnel.
This is recommended in high-security facilities, much like the keypad electronic locks that are more effective in individual rooms that are highly restricted. However, among the three types of biometric authentication methods, the biometric thumbprint is the most secure and difficult to duplicate. The fingerprint biometric analyzes the patterns on the prints such as the archs, loops, and whorls.
This type of biometric authentication works based on two ideas; the uniqueness of the voice tract and the voice accent. Although the process might sound complicated, it is easy to install and will require only microphones and telephones. However, it is important to get the right recognition to avoid problems. For facial biometric to work, you will need a facial recognition detector, which is effective in areas where a lot of people pass through.
Unlike the fingerprint and voice biometrics, the facial biometric system from http: Even the facial expression is also analyzed in some readers. This type of door access lock, also code an access code system, uses an electronic keypad instead of a traditional key to limit access. All the authorized personnel are given numerical codes that are required for entry. This is ideal for isolated rooms that need to be secured because the effectiveness of the system will depend on the number of people and the strength of the given codes.
If you wish to enhance your office security, you can use this in combination with other locking systems on this list including the biometric door access system. However, this is prone to copying and human error because it requires memorization of the codes and how to properly input it. Usually, this is found in various types of safes.
In Singapore, having an aircon system at home is definitely worth your money, especially now that constant exposure to the heat of the sun is really exhausting. And for that, we employ ways to keep ourselves and our family comfortably cool. Freon is trademark for liquid or gaseous fluorinated hydrocarbons used predominantly as refrigerants. Low Freon level causes your aircon to overheat and shut down. If your Freon level is low, it usually indicates that there might be a leak in your system.
For that, you need a qualified aircon servicing technician here in Singapore like aircon master to fix the leak and test the repair. He should also be the one to help you charge the system with right amount of refrigerant. The condenser is the part of an entire AC system that is seen from the outside the house. It is important that you regularly clean it by removing any dirt, dust, lint, and leaves that might have accumulated in the condenser. And in the long run, your cooling unit may get damaged.
When your AC unit has been used for a long time, the evaporator coil will be full of dirt and that will reduce the flow of air. Too much dirt will also insulate the coil, and as a result, its ability to absorb heat is reduced. Thus, it is necessary to clean the evaporator coil from time to time to minimize aircon servicing. Have a regular check-up of the compressor and fan. These parts can wear out especially when there is frequent turning on and off of your AC system. Furthermore, a common problem in many systems is that wires and terminals can be damaged slowly by chemical action.
Thus, there is really a need to check electrical connections. The root cause of faulty air-condition systems is poor installation. When our AC units are installed improperly, ducts may have leaks which are one factor of low airflow.
With inadequate maintenance and poor service procedures, problems can even get worst and unmanageable over time.
To ensure proper installation of your AC unit, let airconmaster. A lot of times, the amount of refrigerant that is in the system does not match the specifications provided by the aircon manufacturer. To avoid having premature aircon servicing, proper refrigerant charging must be performed during the installation. Otherwise, your aircon system will function poorly and inefficiently and will require more frequent aircon repair. In general, aircon manufacturers in Singapore design and make quality aircon units that have the capability to withstand rough handling and require less aircon servicing.
However, we need to understand that the different components or parts of our AC units such as filters, coils, and fins need maintenance on a regular basis in order for it to maintain its optimum performance through time. Think of it this way: In certainty, the system will slowly deteriorate.
The heart is one of the most complex organs in the human body. Even primary school students are taught that the organ beats around , times on the daily and is responsible for carrying oxygen-rich blood throughout the body. Early in our lives, we are also taught of the importance of our heart and how we should take good care of it. The good news is: The size of our hearts is approximately the same as the size of a fist.
Because of certain factors, like gender and age, our heartbeats also differ from one another. Although some people might have ample knowledge about the heart, there are still some facts that your heart doctor wish you knew beforehand. The best cardiologist at chuyen gia y khoa would likely advise you to get your cholesterol level regularly checked, have regular exercise, and eat a healthy and balanced diet.
There are symptoms and red flags you need to get checked on by a heart specialist, and procedures such as a heart screening to undergo regularly. Even your pulse in itself can tell you something about the condition of your heart in general.
Well-experienced professionals from your local cardiology center can help you assess your heart health. Fortunately, any heart disease is considerably almost always preventable. Most heart specialist hopes more people should be aware that every heart disease is a chronic illness, and it needs regular care and ongoing treatment. While some heart diseases are caused by family history or genetic factors, all hope is not lost as it can still be prevented early on.
Feeling your pulse allows you to know your current heart rate. When relaxed and at rest, the heartbeat rate is also usually fairly slow and regular around 60 beats in a minute which suggests a relatively healthy and normal heart health. Having a slow heartbeat rate while at rest can be linked to having a longer life and a lower risk of landing a chronic heart disease.
Your heart doctor would likely tell you that the occurrence of an erratic heart pulse suggests a heart rhythm disorder, like atrial flutter or fibrillation. If your pulse is constantly irregular, it is encouraged to seek help from your cardiologist to get properly screened and tested.
Having a high blood pressure is one leading factor that puts you at great risk of getting cardiovascular diseases such as stroke, heart disease, or heart failure. This dangerous factor is usually silent, since persistent high blood pressure typically has no obvious symptoms.
The only way of knowing is to have yourself checked and tested. Self-measuring blood pressure machines are already starting to show up in more public places such as medical centers, fitness gyms, and even shopping centers. With a normal blood pressure, you do not necessarily have to get it checked more than once every years. However, regular physical check-up is still strongly recommended.
Get checked at http: As previously mentioned, the heart is one complex organ. There is a chance that your heart age may be quite older than your age in years. You can determine your heart age through risk-prediction calculators made available online — which requires necessary personal information such as your age in years, lifestyle factors, and other data.
The Q Risk calculator is a highly recommended one. If the results show your heart age is younger than your age in years, you are doing a good job! If an immediate relative a parent or a sibling passed away from a heart-related condition under the age of 50, that might put you at a risk of sharing a similar heart condition. You may be at a greater risk if the attack was rather unexpected or sudden.
You can ask your heart doctor for a pair of tests: The dry cleaning process in most laundry pick up and laundry delivery services in Singapore is similar to wash and fold process that use commercial washing machines and dryers.
Once your commercial laundry services shop has picked up your dirty clothes, the personnel will separate your clothes according to color and texture. The white and light-colored garments are cleaned first, colored clothes next, then jeans, towel washing or laundry for spa, and finally bed sheets and covers and upholstery covers. Delicate clothes are also washed separately by the commercial laundry service to ensure that your clothes remain in their pristine condition after washing.
Then, your laundry delivery service in Singapore will inspect each item, check for foreign items, and read the car instructions label to determine the best way to clean your clothes. Some fabrics cannot be dry-cleaned and can only be spot-treated or steam-cleaned.
If there are stains on the fabric, it is spot-treated first using neutral wet-side, alkaline or acidic wet-side agents. If the stain is made from oil, grease, fat, and plastics, it is pre-treated with dry-side spotting agents. Bleaching, using either an oxidizing or reducing bleach, is the last option for stain removal if all the other spot-treatment methods have failed. The clothes are placed in the basket or drum that looks like a regular washer. Depending on the size of the commercial dry cleaning machine, it can hold up to 40 kilograms of clothes at a time.
The cycle could last for up to 15 minutes, but some dry cleaning solvents will need at least 25 minutes of washing before the stains are removed. The rinse cycle then begins with the extraction of the remaining solvent by draining it from the basket until all the reside is gone.
Warm air, not hot, is used to evaporate the traces of the solvent in the clothes. Other dry cleaning machines in commercial laundry services shops in Singapore use an alternating chilled and heated air to remove the residue.
The next stage is called the aeration process where the clothes are cooled before they are pressed and folded. An experienced laundry service company in Singapore like http: If there are any stains remaining on the clothes, the laundry staff will treat the clothes again. Any damage to the clothes are repaired, such as lost buttons on your uniform laundry, so make sure that this is included in the terms and services when looking for a commercial laundry services shop in Singapore.
Finally, a pressing machine will remove the wrinkles before the items are folded and delivered to you. Dry cleaning is the recommended method for clothes made of delicate materials, particularly fabrics that degrade in water, and cannot withstand the rough tumble of the washing machine and the dryer.
An engagement ring is one of the most important items that people buy in their lifetimes. The exact opposite is actually true. Although weddings often take place during the warmer months, engagements occur pretty much evenly throughout the year. Summer season is also a bit slow for the business, so jewellers are more likely to be flexible with their pricing just to push their sales. When it comes to carat size, buying shy will help you save a considerable amount money without significantly affecting the look of the stone.
Diamond prices change considerably at carat and half-carat marks, which means that buying shy say, purchasing 1. Expert jewellers in Singapore shared that creating an illusion of additional carat is possible by opting for a ring with a halo setting a circle of small stones surrounding the centre stone. Apart from making the centre stone appear bigger, this type of setting will also give the diamond a vintage look, thus changing its appearance and making it stand out from other gemstones.
Less metal on the ring means lower cost, so choose the more minimal prong setting secures the stone like tripod above the band over a bezel one a metal ring encircles the sides of the diamond to keep it in place for your engagement ring.
Opting for a prong setting will highlight the stone and make cleaning the ring easier. Just make sure that you choose platinum metal for the prongs so the stone will be firmly held in place. Unlike the other diamond cuts, an emerald cut offers few facets the surface that reflects light and makes the stone sparkle. Non-conventional brides often prefer alternative stones to diamonds or use a diamond ring setting but with a different stone for the centre of the ring.
Asian cultures, like that in Singapore and China, highly value the imperial green jadeite. Going for platinum-based ring offers several benefits: Sadly, these good qualities come with a hefty price. Another way to save money when purchasing an engagement ring is to avoid brand names and branded designs. You will get huge savings with these customised wedding bands, which is why expert jewellers recommend this option if the branded rings are outside your budget.
Online jewellers are price competitive, which is why price mark-ups on rings rarely happen online. Purchasing a stone online and having it set in a ring locally is also a good idea to further save money on buying an engagement ring. This might not be a good idea if you are planning a surprise proposal, but it will work if you and your fiancé-to-be are going to shop for the ring together. You might even want to include your own wedding band in the set to get even more savings.
Aside from buying your car or home, an engagement ring is one of the biggest and most stressful purchases that you will make in your lifetime. It is filled with wrong choices to make and questions to ask. Being in a foreign place like Vietnam can seem daunting. Paired with the equally daunting task of finding a place to stay, looking for a Saigon apartment rental can seem like an insurmountable task. There are so many things that you would need to consider, such as the cost, the size of the apartment, the places near the property, and all the accommodations that you and your traveling companions would need.
On top of all of that, there are so many listings to choose from, sourced from many different places. You will have a lot of listings to choose from, from all 24 different districts. The most common districts that foreigners flock to are Districts 1, 2, 3 and 7.
This is because each of them, in their own way, can cater to the needs of foreigners, whether they be businessmen or expatriates. There are so many options and updated listings that feature different properties in Ho Chi Minh City posted in http: Whether you want to rent a house or opt for a villa rental, here are some of the best methods to find a property for rent in Ho Chi Minh City.
When looking to rent apartment at HCMC, the first thing that you might think of doing is going online. If you search for an apartment rental in Ho Chi Minh City, you will be greeted by a host of listings that may be overwhelming to sort through. The most popular sites that you can browse include Craigslist, Batdongsan, and Expatblog. While it may seem unnecessary, going through the listings of Batdongsan can be helpful in finding you properties that are not listed on other sites. Since fewer foreigners can access it, the competition is less fierce.
Who knows, it might just help you score a cheap find, like a condominium rental in District 1, D1, or find you a rent a place in D3. Remember to be respectful and considerate. And of course, make sure that they have the ability to lend you their time. While it may seem daunting at first, especially for travelers who would rather not talk to strangers, you just might score a great deal on a property, all while earning a friend or two.
Travel agencies can be a huge help for those who would like to find accommodations overseas, especially for people who do not travel very often. This would help you spend your money in the best way, to find you a trip that is both economical and comfortable. As long as your travel agent is good and capable, they can help you save up on time, money, and effort.
There are many travel agencies that can help you find a Saigon apartment rental, but the trick is finding the right one. The best way for you to find the right agent for you would be to keep making calls before settling. When all else fails, take a walk. This is also an especially good idea for those looking to rent apartment in HCMC. On the streets of Ho Chi Minh, you will be able to find a lot of signs advertising a Saigon apartment rental.
Most of these signs will be posted on walls or in front of houses and can promise great deals for you to rent apartment in Saigon. To make it easier for you, here are some important points to keep in mind whether you need a pest control management team to help you remove termites, get rid of cockroaches, exterminate rodents and kill other pests, which only causes more harm than good.
Most of the pests listed above can be difficult to control especially if the previous owner of the apartment did not take steps to address the problem.
When this is the case, contact the apartment manager and arrange an inspection or assessment with a pest destroyer in Singapore to make the place safer for your family. These pests do not only ruin the structure and items at home, but they are vectors for a variety of pathogens that will affect family members and pets. Some of the most common problems brought about by pest infestation are food spoilage and contamination; allergies and skin irritation; asthma and other respiratory problems; bacterial infections; viral infections; leptospirosis; mosquito-borne diseases such as dengue; dysentery and more.
You will know if you need to call pest control services in Singapore if you see the following signs of rodent infestation: Although there are commercial products recommended for control of rodent infestation, they are almost always ineffective against the rodents that are known to be smart and adaptive. To effectively exterminate rodents, call the best pest control management company in Singapore for an assessment of the problem.
Cockroaches not only look terrifying to a lot of people, but they also stink and can cause a lot of health problems, such as asthma, gastrointestinal issues, allergies, and other respiratory illnesses. Cockroach infestation is marked by the presence of the pests, existence of moist areas and leaky plumbing, presence of droppings, presence of egg cases and dead cockroaches, and the unpleasant smell characteristic of the insect. To get rid of cockroaches, you need to eliminate possible breeding areas such as holes and cracks on the walls and ceiling, piles of boxes and papers, moist spaces near leaky plumbing, and spoiled food and garbage.
They can be difficult to control using only the commercial insect sprays, that is why you need to contact http: Termites can cause significant damage in your apartment, but most people are not aware that termite infestation does not only happen in wooden structures. Look for the following signs of termite infestation: It is very difficult to remove termites if the infestation has been going on for years, but pest control management can help you save your structure with methods that are fast, effective, and safe.
Electricity is a valuable thing to have in every home and business, and electrical works are what make the comforts, products, and services that modern life has to offer much more available to us. The electrician installs and maintains the systems that provide power into the machinery and equipment that makes almost everything available to us, and this is what makes the electrician so important, especially in Singapore.
Electricians also have their own specializations in different types of electrical works. There are at least three main areas where these specialties are applied, which are:. With that said, there are some similarities between commercial and domestic electrician services provided by companies like power max in Singapore in that they essentially work in a similar manner except for the size. A good electrician is an especially valuable asset to industrial sectors that require large amounts of power and current in their systems in order to operate various types of equipment and machines that go into the manufacturing of products and services.
Apart from the different fields where electricians can apply their skills, there are also three stages or types of electricians working in these said fields, either working to complete their training or to supervise and train those who they are working with. These three categories of electricians can be classified into apprentices, journeymen, and master electricians. Here they are explained in detail:. These types of electricians can be found in construction firms, utility companies, or manufacturing plants.
After passing their apprenticeship and their electrical exam, journeymen receive a certification as a licensed electrician. They can then proceed to work on any type of system unsupervised. They can also train apprentices who are working towards a certification.
Aside from the minimum necessary experience training, master electricians also need to possess managerial skills in order to supervise laborers, apprentices, and journeymen on either residential or commercial jobs. Different electrical servicing companies offer different types of electrician services, which can depend based on whether the electrical servicing company is working in the domestic, commercial, or industrial sector. When it comes to electrical troubleshooting, the electrician will not only determine the cause of your power failure, but also take into account the necessary repairs and upgrades to make in order to keep your power systems operating smoothly.
A lot of current then flows from the active wire to the inactive one, resulting in either a blown fuse or a tripped circuit breaker. When this happens, the existing wiring should be replaced with new ones. Electricians can also re-wire existing lines from old to new service connections, connect and disconnect wirings depending on the usage, or re-route certain wirings to make sure that they do not pose as a potential hazard.
This is because stretched-out wiring is more prone to snapping especially under strong winds and bad weather.