Switch Loop Diagram

Both the black and red colors signify a hot or live wire.

Switch loop diagram. So an exception is made so that the neutral is connected directly to the light fixture and just the hot feed goes down to the switch and just the switch controlled hot wire comes back. Mark the white wire at each end with black tape or black paint to indicate it is hot. In this diagram 2 wire cable runs between sw1 and the outlet. The neutral white wire which would not be used is simply capped off inside the electrical box.

For those of us that are more visual learners i ve made this show one that can be followed visually. Figure 2 diagram of a switch loop. The other switch terminal is connected to the black cable wire running to the hot terminal on the receptacle. From a physical wiring standpoint it will be necessary at a minimum to run 14 3 cable which contains a black red and white wire.

The source is at sw1 and the hot wire is connected to one of the terminals there. When the power feed enters the light fixture box and we wish to have a wall switch it is quite useless for the neutral to go down to the switch and come back up to the light fixture diagram 1. The 2011 nec code requires that the switch loop use wires of the proper color code to signify hot wires. To make a switch loop connect the incoming hot black wire to the white neutral wire that runs to the switch.

Next the incoming white neutral wire is attached to the light fixture as usual and the black wire from the switch is connected to the light fixture. This is commonly used to turn a table lamp on and off when entering a room. For instance when a module will be powered up and it also sends out the signal of fifty percent the voltage plus the technician will not know this he d think he has an issue as he would expect the 12v signal. The source neutral is spliced in the switch box with the white cable wire running to the neutral on the receptacle.

When you use your finger or perhaps stick to the circuit with your eyes it may be easy to mistrace the circuit. In this episode i draw out on the white board how switc.