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You don't say "turn off" or turn on". Light should be connected black to black and white to white and ground to ground. If you connect white to ground it will work, but you are then using the ground wire for an unintended purpose. Neutral is bonded to Ground at the panel. Current on ground wire could cause ground loops and may cause GFCI to trip if you have them in your house.

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Q: Why does a light turn when you place black to black and white to ground wire?
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How do you install a swag kit with two wires to a light with three wires?

I am guessing that your 3 wires are black (hot), white (neutral) and bare or green wire (ground). Connect black to black, white to white and ground wire to the metal case of swag kit.


Have 3 lights Power to light 1 Need to connect light 2 then light 3 then down to single pole switch How do you wire?

You would wire the switch to the first light. Code says to break the black or power side of the circuit. Connect the white to the light. Take the black down to the switch on the black wire and back to the light on the white. This is a line of wire from the light to the switch. From the first light, take the white and the return white from the switch to the second with another run of wire. This will be regular black white with ground. White to white and at the first light the return line from the switch is white but hook to the black to the second light. Second light to third just continues the two wires. Black to black, white to white. I think this is clear enough to follow. If not, ask again.


What if your light switch has four wires two white and two black. Which one would be the hot wire and would two be the grounds?

One set, one white and one black are the power and ground coming in. The other set goes to the light. Probably, the one in the bottom of the switch box is the power in. In this case, it really doesn't matter. If you break the black wires, the light should work. Tie the two white together and connect 1 black to each terminal on the switch. White or ground goes to the light, black will feed through the switch either way and complete the circuit.


How do you connect multiple lights to one switch starting at the light?

You put switch in series with the black supply wire and the black wire to the first light. Then connect black wire of first light to black wire of second light, black wire of second light to third light and so forth. Do the same with the white wires and ground wires.


If there are two black and one white wire in ceiling light do I need to use both black for the switch to work?

If there are two black wires, it's possible that it was wired for a ceiling fan and that one of the wires is for the fan part while the other is for the light part. If so, one of the black wires may be switched while the other is always "on." Normally black is "hot" and white is "neutral" (NOT ground... ground is usually green).

Related questions

Can you run power from a light fixture to another light fixture?

Yes. Connect Black to Black, White to White and bare ground wires together.


How do you install a swag kit with two wires to a light with three wires?

I am guessing that your 3 wires are black (hot), white (neutral) and bare or green wire (ground). Connect black to black, white to white and ground wire to the metal case of swag kit.


Have 3 lights Power to light 1 Need to connect light 2 then light 3 then down to single pole switch How do you wire?

You would wire the switch to the first light. Code says to break the black or power side of the circuit. Connect the white to the light. Take the black down to the switch on the black wire and back to the light on the white. This is a line of wire from the light to the switch. From the first light, take the white and the return white from the switch to the second with another run of wire. This will be regular black white with ground. White to white and at the first light the return line from the switch is white but hook to the black to the second light. Second light to third just continues the two wires. Black to black, white to white. I think this is clear enough to follow. If not, ask again.


What if your light switch has four wires two white and two black. Which one would be the hot wire and would two be the grounds?

One set, one white and one black are the power and ground coming in. The other set goes to the light. Probably, the one in the bottom of the switch box is the power in. In this case, it really doesn't matter. If you break the black wires, the light should work. Tie the two white together and connect 1 black to each terminal on the switch. White or ground goes to the light, black will feed through the switch either way and complete the circuit.


Can white reflect black or does black absorb white?

Black surfaces absorb all light. White surfaces do not "reflect black" as there's no such thing as black light.


How do you connect multiple lights to one switch starting at the light?

You put switch in series with the black supply wire and the black wire to the first light. Then connect black wire of first light to black wire of second light, black wire of second light to third light and so forth. Do the same with the white wires and ground wires.


If there are two black and one white wire in ceiling light do I need to use both black for the switch to work?

If there are two black wires, it's possible that it was wired for a ceiling fan and that one of the wires is for the fan part while the other is for the light part. If so, one of the black wires may be switched while the other is always "on." Normally black is "hot" and white is "neutral" (NOT ground... ground is usually green).


Can you change an electrical outlet into a switch for a light?

Sure. For a light you need a fixture to hold the light and the light itself. The light needs to be connected to a voltage supply which you can get from the outlet. In the outlet box you will have a black, white and bare ground wire. Essentially you connect the white and bare wires directly to the light and switch the black wire (hot) through a switch.


Do black and white a color?

No black and white are just the reflection of the light


Does white or black reflect light?

White reflects, black absorbs.


Does white or black absorb the light?

Black absorbs light more.


What is the best pool decking for cool feet around an in ground pool?

Any material that is very light or white in coloring. I once stayed at a place where the pool terrace was paved in black basalt. OW! OW! OW!