Can I use a higher powered lightbulb?

Can I safely use a 9 W LED lamp instead of a 40 W incandescent lamp?


LONG ANSWER: The maximum performance limits largely depend on the heat. With incandescent lamps, more power means more heat. Excessive heat build-up can shorten the life of the lightbulb and even create a fire hazard, especially with a light fitting in which the lightbulbs are completely enclosed.

While lighting is traditionally sold in watts, you are really buying the amount of light that is actually measured in lumens. The performance gave us a good idea of ​​how much light was coming from a lightbulb for years. A 100 watt lamp was much brighter than a 40 watt lamp and a little brighter than a 75 watt lamp.

When different types of lightbulbs were used, lumens were listed. At a certain lumen level, LED lamps use much less power than incandescent lamps. For example, a 75 watt incandescent lamp emits between 700 and 1100 lumens (depending on the type). However, LED lamps that emit around 900 to 1100 lumens only consume between 9 and 15 watts. Since they are similar in light output to a normal (incandescent) 75 watt lamp, they are called 75 watt equivalent .

A 15-watt LED lamp produces just as much light, but much less heat than a 75-watt incandescent lamp. In fact, it probably generates less heat than a 25 watt lightbulb. But it creates some warmth. Some lamps are not marked for use in fully enclosed luminaires .

In general, as long as the lamps are not marked for restricted use, you can use an LED lamp, which has a much higher rating than an incandescent lamp. In general, it is not a problem to use a 75 W equivalent LED lamp in a luminaire with a maximum power of 40 W. They only use around 15 watts and generate much less heat than a 40 watt light bulb.