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lights can be wired any way round, there is no positive or negative

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16y ago
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14y ago

if fixture has two bulbs then two blacks are hot wires. Two whites are neutral wires.

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Q: What if the new light fixture has 2 black wires and no white wire?
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Outside porch lamp has no box just two wires coming in black wires are tied and don't connect to fixture just the white wires what is going on here?

You would have to provide more info to be certain what your problem is. Typically a black and white wire would connect to the two wires on the light fixture. The fixture should also be controlled by a switch that "breaks" the black (Hot Wire) to turn off the fixture. If you have a volt meter you can see if there is 120Volts between the black and white wires with switch on. If there is a single white wire going to fixture (Neutral), where is the "black wires tied" to. Maybe one of the black wires has broken off the fixture.


Do you connect both wires on a pull chain switch one to black one to white?

There should be two wires in the box, black and white and possibly a bare one depending on the age of the wiring in the house. The fixture has two screws on the base. One wire goes on each screw. If there are short wires on the fixture, black to black and white to white. If there is a bare ground wire in the house box, it attaches to the body of the fixture. If there is no ground screw on the fixture, do not worry about it.


How do you wire a ceiling light that doesnt have a black or white wire?

It will have 2 black or brown wires. Look very closely at the wires coming from the light. One of the wires will have ridges on it or may have a white line or some other method of identification. That wire is the neutral wire and connects to the white wire in the ceiling box. The smooth wire is the hot wire and connects to the black wire in the ceiling box.


How do you wire a ballast that has two black wires for a one tube fluorescent lamp?

There should be a black & white wire coming from the light. Hook black to black and white to white. Then connect the ground wire to the light chassis. You need 12/2 with ground for the circuit. You do not need a light fixture box for these type lights.


What happens when two hot wires are connected?

Wiring to the circuit breakers is 220 volts. The circuit breaker box has 2 110 Volt lines. If you connect two black lines together from one side nothing happens. If the these two black wires are from different circuit breakers you may have a safety issue by back feeding the electricity. If you connect 2 different 110 volt lines you will end up with a short. This ends up as a 220 volt short.

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.


Outside porch lamp has no box just two wires coming in black wires are tied and don't connect to fixture just the white wires what is going on here?

You would have to provide more info to be certain what your problem is. Typically a black and white wire would connect to the two wires on the light fixture. The fixture should also be controlled by a switch that "breaks" the black (Hot Wire) to turn off the fixture. If you have a volt meter you can see if there is 120Volts between the black and white wires with switch on. If there is a single white wire going to fixture (Neutral), where is the "black wires tied" to. Maybe one of the black wires has broken off the fixture.


My light fixture has writing on one wire but not the other?

If both wires are black then the one with the writing is the neutral wire. If the two wires are black and white then the white one is the neutral.


When wiring a light fixture does black go black and white on white?

If these are all the wires you have then this would be a great assumption. It assumes also that everything before the fixture is wired correctly and with commonly used color schemes.


If both wires for a ceiling light fixture are black how do you tell which is the live wire and which is neutral?

If both wires are black, the one that connects to your white wire is the one that should have little writing on it. Black to the plain black wire, white to the wire with writing.


Troubleshooting 40 year old outside wiring to light fixture?

Yes


Do you connect both wires on a pull chain switch one to black one to white?

There should be two wires in the box, black and white and possibly a bare one depending on the age of the wiring in the house. The fixture has two screws on the base. One wire goes on each screw. If there are short wires on the fixture, black to black and white to white. If there is a bare ground wire in the house box, it attaches to the body of the fixture. If there is no ground screw on the fixture, do not worry about it.


How do you wire two light fixtures?

The lighting fixture should have all of the bulb's leads brought to a central point in the fixtures junction box. All of the black wires from the bulb's socket will be tied together. The same applies to the white wires from the socket.The white wires are tied into the lighting circuit's white neutral wire and the black wires are all connected to the "hot" supply wire. Once these connections are made, the fixture can be bolted to the ceiling junction box.


How do you wire a ceiling light that doesnt have a black or white wire?

It will have 2 black or brown wires. Look very closely at the wires coming from the light. One of the wires will have ridges on it or may have a white line or some other method of identification. That wire is the neutral wire and connects to the white wire in the ceiling box. The smooth wire is the hot wire and connects to the black wire in the ceiling box.


How do you wire 120 volt 2 bulb 8 ft?

It sounds like you are talking about a two tube eight foot fluorescent fixture. Open the fixture up and you will find a ballast that has probably two yellow wires, two blue wires, two red wires and a black and white wire coming out of it. The 120 volt supply will connect to the black and white wires that protrude out of the ballast. Black ballast to black supply and white ballast to white supply.


How do you wire a ballast that has two black wires for a one tube fluorescent lamp?

There should be a black & white wire coming from the light. Hook black to black and white to white. Then connect the ground wire to the light chassis. You need 12/2 with ground for the circuit. You do not need a light fixture box for these type lights.


What happens when two hot wires are connected?

Wiring to the circuit breakers is 220 volts. The circuit breaker box has 2 110 Volt lines. If you connect two black lines together from one side nothing happens. If the these two black wires are from different circuit breakers you may have a safety issue by back feeding the electricity. If you connect 2 different 110 volt lines you will end up with a short. This ends up as a 220 volt short.