Here a receptacle is added to the circuit before the first switch. It is not controlled with the switches but is instead always hot. The source hot, neutral and ground are spliced to a 2-wire cable that runs to the new outlet. The 3 way switches and light are then wired in the usual way with the common on SW2 spliced to the source hot and the light hot wired to the common on SW1.
Included is a diagram for a 3 way dimmer and an arrangement to control a receptacle from two locations. For more information about these circuits and troubleshooting tips check below.
When the electrical source originates at a light fixture and it’s controlled from a remote location, a switch loop is used. The circuit pictured here is wired with 2-conductor cable running from the light to the switch location. The white cable wire in this switch loop is wrapped with black tape and connected to the bottom terminal on SW1 and the hot source at the light. The black wire is connected to the top terminal on SW1 and the hot terminal on the light fixture. The neutral from the source is connected directly to the neutral terminal on the light.
The traveler terminals will always be connected from switch to switch. Travelers never connect to a device load or to a source wire. It doesn’t matter which traveler terminal is used for which traveler wire, reversing them should make no difference.
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