How to Wire a Double Pole Dimmer Switch | eHow Switch off the main circuit to the house. Two 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 install the dimmer switch. Use only a double pole dimmer switch that is rated to handle the wattage required by your light fixture. 2 Way Light Switch Wiring Diagram | House Electrical A 2 Way Switch Wiring Diagram with Power Feed from the Switch light : The power source comes from the fixture and then connects to the power terminal. You will see that there is a hot wire that is then spliced through a switch and that then goes to the hot terminal of the light. Two way switched lighting circuits #1 As with the one way switch, the switch cable from the ceiling rose contains two wires, a permanent live and a switched live. The difference is that one wire connects to L1 and the other to L2. This is the cable entering from the top of this diagram. The second switch is connected to the first switch Dimmer Switch Wiring - Electrical 101 In the diagram below, a 2-wire NM cable supplies power from the panel to the dimmer box black (line) wire connects to the common terminal of the 3-way dimmer.A 3-wire NM connects the travelers of the dimmer to the travelers of the 3-way switcheler wires are interchangeable on each switch.
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