How to Wire Two Separate Switches & Lights Using the Same Power Source

Most circuits can easily handle more than one light and switch combination.

It isn't unusual to wire two or more light and switch combinations from the same power source -- in fact, it's common practice. Typically, the source is a circuit breaker in the main electrical panel that has a rating large enough to handle the lights. It's possible to mount the switches in the same or in different electrical boxes, but the latter case involves the extra task of running a circuit cable between the boxes. You maintain the continuity of the hot wire in the circuit cable by forming pigtails at the points where it connects to the switches.

1

Install appropriate electrical boxes for the lights and switches. You can mount the switches side-by-side in a double-gang electrical box or in different locations, each in a single-gang box. For each fixture and switch you have the choice of nailing a rough-in box to a stud or rafter or mounting a remodeling box on the drywall.

2

Run 12-gauge electrical cable between each switch and the light it controls. Pull one end of each cable through the back of one of the light fixture electrical boxes. Strip both ends of each cable with a knife, separate the wires and remove 1/2 inch of insulation from the end of each.

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Monday, July 6, 2015