Assuming it is a steel box. Adding new light fixtures off an existing light switch.
Adding An Extra Light From A Light Switch
Wiring in a new light and switch. This is an updated version of the first arrangement. This 3 wire switch loop satisfies the nec requirement of a neutral in the switch box. The red and black are used for hot and the white neutral wire at the switch box allows for powering a timer remote control or other programmable switch. Because the electrical code as of the 2011 nec update requires a neutral wire in most new switch boxes a 3 wire cable runs between the light and switch. Wiring diagram for a new switch and light. If the light switch has a ground screw on it usually green and at the bottom of the switch connect it now.
Run a cable to the light fixture and another cable to the outlet from which youre drawing power. With the power coming to the switch and then going to the lights you will notice that there are two black wires two white wires and two ground wires bare wires. The source for this circuit is at an already existing light fixture and a 3 wire switch loop run from there to the switch box. In this diagram a new switch and light are added to an already existing light switch. The easiest way to add new light fixtures is to run the new wiring to the existing light fixture splice the wires together as the old fixture was connected and then place a decorative blank cover over the fixture box. It can be anywhere but if you want it to be compliant with the americans with disabilities act put it 44 inches above the floor preferably near a door.
First of all we should connect the ground wires to the box. If youre wiring a new switch youll need to install an electrical box.
Gallery of Wiring In A New Light And Switch
