OK so here it goes. I have a stadium-type 400w lamp which I just replaced the bulb in, and now I mounted it to a light post in on my yard.
I’m planning on running a wire straight down to my breaker box. the wire coming out from the lamp has 3 other wires inside of it. (when stripped) a black one, a white one and a green one.
The wire going out from the breaker box also has 3 wires inside of it. a white one, a black one and a single stripped copper wire…
MY QUESTION IS: How do you put together this 3 sets of wires? my Hypothesis is black with black, white with white, green with copper.
Am I correct? I have done simple electric work before, but never dealt with a 3 prong wire before.
If this is a 120 volt light then yes you have it black to the breaker HOT and the white is the neutral and the green is ground or in your case bare to the ground bar or neutral bar.
So color to color at the light and the bare is the green or ground.
Electrical Contractor |><|
-That would be correct if it was 110 volts but if its 220 volts you need to make sure your white wire is not grounded it needs to be hot.
You are correct. The Black wire is the hot wire 110/115 volts ac. The White wire is neutral (return for the hot wire. The Green wire is the safety ground which should return to the earth (water pipe, etc). You may be able to verify the copper wire and see that it connects directly to something metallic in the house. The green wire should connect to the outside of the lamp to prevent you from being shocked in case the lamp hotwire was to ever touch the metal housing of the lamp.