Wiring a light switch 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. First of all we should connect the ground wires to the box.
How To Add A Light
Power to switch then light. You just want to put power to the switch then onto a light. The white wires from the source light and the outlet are all connected. Assuming it is a steel box. If power comes into the switch box first the neutral white line from the service panel and the white line that leads to the light are spliced together. The source hot wire is connected to a switch terminal and the other terminal is connected to the black cable wire. In this case both wires going to and from the switch carry a current.
The current is carried into the bottom connector on the switch and then out the top connector and from there to the light. Flipping the switch interrupts the flow of electricity to the light turning it off and on. I then wired a 142 cable from the 2nd switch to top isolated half of all outlets in the room to provide switched power. Turn the power off at the breaker. In this 4 way light circuit the power source is via the first switch sw1. The incoming power from the outlet is attached to one of the light switch screw terminals and the black wire of the cable leading to the light fixture is attached to the other light switch screw terminal.
I connected a 3way switch and then routed a 143 cable from this switch to a second 3way switch at other end of room. Run 142 with ground sheathed electrical cable from. Click the icons. My living room power source goes to a switch box at one end of the room. The hot black wire from the power source travels through the switch and from there to the light. The hot connects to the common on that switch and the neutral is spliced through all the switch boxes to the neutral terminal of the light.
The ground wires are all brought together under one cap as well. A three wire cable runs between all the switches connecting the travelers. Wiring a single pole light switch here a single pole switch controls the power to a light fixture. You do not want the switch to control the outlet. Wiring a light switch power into light the following diagram shows how to wire a light switch when the power source runs into the light fixture before it goes to the switch. Light switch diagram power into light pdf 44kb back to wiring diagrams home.
The source is at the switch and 2 wire cable runs from there to the light. Connections to the outlet are basically color to color for the blacks whites and green or bare ground wires.
Gallery of Power To Switch Then Light
