A dimmer switch uses electronics to control the flow of power to your lights. If you own a laptop computer, you know that electronic devices can get rather warm. But too much heat is usually the first sign of a problem.
Too Much Light
The most common cause of dimmer overheating is installing bulbs of too high a wattage. The total wattage for all the bulbs you are trying to dim shouldn't exceed 90 percent of the rating for your dimmer switch. If it does, the switch will overheat, perhaps dangerously so. Remove some bulbs, reduce their wattage, or install a dimmer with a higher rating.
Dimmer switches are rated for a certain wattage. If two or more dimmers are installed side by side, the installer must lower that wattage rating for each additional dimmer and plan the circuits accordingly. Also make sure no one has tampered with the heat sinks, those metal plates installed on the dimmers by the manufacturer to help dissipate excess heat.
Modern dimmer switches are highly efficient. Only about 2 percent of the power running through them is converted into heat. That's much less than older models, but even if everything is installed and being used properly, a dimmer switch will still feel warm to the touch. If yours is hot enough to burn you or smells funny, something serious may be wrong.
- Photo Credit six electric bulbs image by timur1970 from Fotolia.com
How to Replace a Single Pole Switch With a Dimmer Switch
Nothing stirs romantic tendencies like a little mood lighting. Having a light on at full wattage is great for doing crafts or...
How to Wire a Light Dimmer Switch
A dimmer switch gives you much more control over your lights than you'll get with a flip switch. They also save energy...
How to Replace a Dimmer Switch
Replacing a faulty dimmer switch involves just disconnecting and reconnecting two pairs of wires.
How to Install 3-Way Light Dimmer Switches
A three-way dimmer switch allows you to control a light fixture from two or more locations. This type of dimmer can be...
What To Do if a Light Dimmer Is Overheating
The electricity moving through light dimmers causes them to sometimes heat up. A small amount of warmth is normal and does not...