Why do Dimmers get warm?

During normal operation, solid-state dimmers generate heat. A solid-state dimmer is roughly 98% efficient-2% of the power is dissipated as heat, causing the dimmer to feel warm to the touch. The closer a dimmer is run to full output and the higher the load (watts) on the dimmer, the warmer it will feel. This is perfectly normal and safe. Lutron dimmers are designed to the strictest UL safety standard, and can handle their full rated load (a 600 Watt dimmer can handle a full 600W of power*) without overheating.

*Dimmers that are ganged together in a common wallbox may need to be derated. Consult the product instruction sheet for more information.

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