How to Wire A Double Pole Dimmer Switch
Double-pole refers to a circuit that uses two 120-volt poles to create one 240-volt circuit. A dimmer switch has a special resistor that permits a varying amount of current through in order to supply a variable wattage to the output. It is known as a dimmer switch because it is often used in lighting circuits to permit the lights to be set to different levels of brightness. Only use 240-volt rated lights and switches when installing a double pole dimmer switch.
Things You may Need
Screwdrivers, flat-head and Phillips
Switch off the primary circuit to the house. 2 hundred and forty volts can seriously injure you; do not work on a hot circuit. Unscrew the cover plate over the electrical junction box where you are going to put in the dimmer switch. Use only a double pole dimmer switch that is rated to handle the wattage required by your light fixture. Add up the wattage of all the bulbs within the fixture to determine the maximum wattage required.
Locate the 2 white wires (common wires), the 2 black wires (hot wires), and the 2 ground wires (either bare wire or green insulated). Locate the two chrome screws on the switch (they correspond to the white wires), the 2 brass screws (correspond to the black wires), and the two green screws (they correspond to the ground wires).
Screw the wires to the corresponding terminals. If necessary, strip off the insulation on the last inch of the wire and bend it over in a hook shape that may be hooked around the screw shaft. Tighten all of the screws. Screw the dimmer switch to the mounting points within the junction box.
Screw the new face plate that came with the dimmer switch to the outside of the junction box. Restore the facility to the house.
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