Fluorescent and incandescent lights use different mechanisms to produce visible light; incandescent lights rely on light emitted by a heated filament, while fluorescent lights utilize ultraviolet light emitted by excited mercury particles. The process behind fluorescent lighting is more complex than that of incandescent lights. However, fluorescent lamps are a more energy-efficient method of lighting than incandescent lamps.Know More
Incandescence is the emission of light by a hot object. Incandescent light bulbs function by stimulating the incandescence of the filament, a wire inside the bulb. Electricity passes through the filament and raises it to high temperatures until it is so hot that it produces light. The glass bulb surrounding the filament keeps oxygen out of the system in order to prevent the filament from burning or evaporating.
Fluorescent lamps use another method entirely. The fluorescent tube is filled with mercury vapor gas. When the lamp is turned on, electrical currents excite the mercury vapor, causing it to emit ultraviolet light. However, because ultraviolet light is not visible to the human eye, the inside of the fluorescent tube is coated with phosphor. This phosphor coating converts ultraviolet rays to visible light.
Fluorescent lights have higher luminous efficacy than incandescent lights. This means that they convert more of the input power to visible light (incandescent lights convert most of the electrical energy to heat). Whereas incandescent lights convert approximately 5 percent of power input to visible light, fluorescent lights convert about 22 percent.Learn more about Electrical
Lights in a house can become dim because major appliances are pulling too much electricity from the same electrical circuit as the lights. Other causes of lights dimming include neighborhood-wide problems with the power grid or serious issues with the house's electrical panel.Full Answer >
The number of lights that are safe to use on a 15-amp circuit depends on the wattage of the lights. The safe full load rating for a circuit is no more than 80 percent of the rating for that circuit.Full Answer >
Both MCM and kcmil mean 1,000 circular mils, which is a unit used to measure the area of the circular cross section of a wire. The terms MCM and kcmil are used interchangeably by the National Electric Code to describe wires that are larger than 0000 American wire gauge.Full Answer >
A delta electrical connection is formed when three branches of the electrical network are connected to form a closed loop, whereas a star electrical connection is formed when either terminal of three branches is connected to a common point. Star electrical connections can be converted into delta electrical connections and vice versa.Full Answer >