Im moving a light switch to a different wall and have found that the cable from the switch to the light has 3 wires but i dont know why. The 2 wire source feeds to an adjacent switch for a differ.
Smart Light Switch Wiring Diagrams Mr Electrician
Wiring a light switch with 3 wires. Twist the end 180 degrees forming a nice neat loop. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. Red and blue wires link traveler terminals of both switches. How to attach a two wire lighting fixture to a three wire supply step 1. Repeat with the other black wire. Hook the loop around the contact point and tighten the screw in a clockwise manner.
Test the wires to verify that no power exists using a voltage tester. Turn off the circuit breaker at the main panel that supplies power to the three wire cable intended for the. Re wiring 3 way light switch hi guyscould really do with some advice for replacing a 3 way single light switch. This third wire is necessary for 3 way switch installations. The 3 wire system is less common than the 2 wire system it includes a neutral at the switch as well as the live and switched live wires. The old switch had four wires going into l1 l2 l3 and l4.
Place one probe of the tester on the. A 3 wire cable has an extra wire when compared to 2 wire cables and this wire is nearly always covered in red insulation. The black hot wire connects to the far right switchs common terminal. Leave 810 inches 203254 cm of wire inside each of the boxes before cutting the cable to facilitate easy splicing and connection to the switch and fixture. In this diagram power enters the fixture box. If you have a 2 gang or 3 gang switch you may have black and grey wires however these will have a brown sleeve on them as they are also switched live wires.
Once your loops are created attach one of the loops to the contact point on your light switch.
Gallery of Wiring A Light Switch With 3 Wires
