The Best Ceiling Fan Light Voltage Regulator Ideas. While decreasing the voltage, the resistor heats up, and thus the electricity saved by lowering the fan speed is lost as heat in the regulator. Web 248k views 10 years ago.

Continuing the procedure with the power on could result in death or serious injury. Begin with turning off the circuit breaker that is responsible for sending power to the ceiling fan motor. First, i opened the bottom unit, which has all the different splices, regulators, and switches in it.