Out Of This World Old Wiring To New Light 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.

Old wiring to new light switch. The old electrical wiring is still acceptable as long as the insulation on them is intact. Houses built before world war i often have plaster walls and original knob and tube wiring which was installed according to old outdated electrical code that did not require electrical boxes for light fixtures. However the connections must be.

If it s not attached to your old switch it may be clustered together in a bundle in the back of your wall box. I pulled off a light switch and was going to replace it but the wiring seems non standard. This is an updated version of the first arrangement.

The ground wire sometimes in a green jacket should be connected to your switch and to your lights. Since there is no ground you can remove the fixture ground to avoid any potential problems and to save space. A simple continuity test will determine which wire is the switch leg.

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. This wire is needed to install brilliant and is required for safety. This wiring illustrates how to add a new light fixture from an existing switch instead of from the light fixture.

This wire is needed to complete the circuit. The switch serves to cut the power from reaching the light switch. This wire is green or bare copper and may or may not be attached to your old switch.

It has a brass common screw and two traveler screws. Old light switch wiring question not using black wires. When you change the fixture the national electrical code requires you to install an electrical box and update the wiring method to the current code.