How hot does the glass of a light bulb get?
That is a lot of energy being used to heat up the tungsten filament. Therefore, the bulb can get quite hot as soon as it switches on, depending on its wattage. To be exact, a 75-watt bulb’s glass body can reach a temperature of 500 degrees Fahrenheit! That’s 260 degrees Celsius.
Can a 40 watt light bulb start a fire?
Yes, especially if clothing is allowed to pile up near the fixture. An estimated 12 percent of all house fires begin in a closet. An incandescent light burns at between 212 and 572Â°F. … Even a 40-watt bulb can generate enough surface heat to ignite fabric or plastic.
How hot does a 250 watt bulb get?
The 253-1119 is a red, safety coated shatter-resistant infrared heat bulb from Franklin Machine Products that has a medium base and 500 degrees F maximum ambient temperature.