Twist these around the house wires. Twist wire connectors supplied by the switch manufacturer. Carefully fold all wires back into the box, screw the dimmer to the box and replace the cover plate. Turn the power back on. Replace a switch that controls a light or lights from a single location with a single-pole dimmer.
Fluorescent lights require a special, much larger and more expensive dimmer.
If your new dimmer hums, you probably need to buy a better model. Your dimmer may be overloaded if the switch controls many bulbs, as with track lighting. Safety Never use an ordinary dimmer to control a receptacle, fluorescent light or any appliance that has a motor or transformer. Overheating could damage the dimmer or other equipment. Sierra On-Line, Inc.