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Question:

wiring a light switch?

i am re-wiring light switches in my home. Pulled off the old switches and there are four wires. 1 red, 1 black, 1 white and 1 bare. My light switch has three spots, 2 brass screw plates and a ground screw, what of the 4th wire?

Answer:

Seems like you have three way light switches. Try using a three way light switch there is a difference from a regular light switch.
interior the 70's you the place no longer required to floor a change. additionally in an attempt to show around the artwork slowdown they observed all kinds of loopy time saving assets you advance speed greater value-effective properties yada yada Grounding replaced into one, then you certainly ought to makes use of the pipe as a floor between bins. That went out the window and now you're required to floor each thing. the different time saver you talk approximately is the skill to apply a 2 twine to run a change. lower back interior the day white replaced into white and each thing else is black. interior the 70 they amended asserting you ought to use the white yet only! if it used as a results of fact the nice and comfy twine. That way you may perceive it in a field or easy by utilising the way it replaced into under pressure that yep that thurs da warm. If it replaced into no longer and used as a results of fact the change leg you ought to be puzzled to make certain 2 whites on a lighting fixtures furniture or perhaps waiting to touch it thinking it a independent {while the change is off} and tie it in with the incorrect set. So in case you notice a white in a case like this it is probable the nice and comfy {consistent warm} and could proceed to be as such on your rework. you comprehend for the subsequent guy lol.
problematic factor. check out onto search engines like google. this could help!
The bare wire is always the ground, for the rest: Not enough info. Look at the old switch. Is it the same as the new? You describe a single pole switch, and the wiring you describe might be for a 3 way switch. (If those 4 wires come into the box in one cable, it's almost a certainty.) Are there two switches controling the lighting in that area? Good rule: If you re-wire anything, always make a note of how things were connected before you remove anything. You've got yourself a puzzle now, that you'll need to solve by elimination with meter or test lamp.. EMail details and i'll try to help.

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