Electrical Outlet Is Wired Backwards

How can I install HS if my powerline socket only contains 3 lines? As we know, power transmission usually take the form of three phase four wire. Due to the three-phase equilibrium A, B and C line are connected together at N line , there is no current flows through N line, we call it neutral line. In general, the electrical line will supply two live lines, one neutral line and one ground line to you install socket or switch.

If there is no neutral line in the wall box, STOP installing the switch and consult with a professional electrician.

It would be connected to the black wire of the “load” (light fixture, outlet controlled by switch, fan, etc.) The OTHER times I’ve seen (and used) a red wire have been in the case of 3-way (and 4-way switches), multiple (gang) switches for multiple loads, and / wiring.

Wiring a Light Switch – End of Circuit The easiest place to wire a light switch is at the end of a circuit. This does not mean that you should plan all your circuits so that your light switches are necessarily at the end. A light in the middle of a circuit really isn’t that much harder. Before beginning any electrical work, it is wise to turn off the circuit and then to test to make certain that the circuit is indeed off with a circuit testing device.

Circuits generally use either 12 or 14 gauge wire. In wire gauges, the bigger number designates a smaller diameter wire. As a rule of thumb you should use 12 gauge wire for 20 amp circuits and 14 gauge wire for 15 amp switches. When placing the switch boxes, be sure to choose an easily accessible spot near the door about hand height.