2 OLD WHITE AND BLACK WIRE HOUSE WIRING
what do wire colors mean (old house)? | Yahoo Answers
Feb 05, 2012I have an old house and am replacing a dimmer switch in the kitchen. The old switch is has only 2 wires coming out of the switch that are both black. From the wall 2 wires connect to the 2 black wires on the switch, one is black which I have concluded is hot and the other is red, which must be the common wire.Status: ResolvedAnswers: 10To begin with, don't worry about the white wires tied together in the back of the switch box, that's normal to see in a switch box (outlet boxes are a whole different ball game). The only purpose of a switch (regular or dimmer) is to control the "hot" (black) side of the circuit that powers the light (or fan or whatever it is).
To simplify this for you, just connect one black wire from the switch to the black wire in the box and the other black wire from the switch to the red wire in the box. That will make the connection and your light will work on the dimmer. If there is a green wire on the dimmer switch, connect that to the bare copper wire inside the box. If no green wire, then just screwing the switch to the box will ground it assuming it's a metal box. The metal box should already be properly grounded, you might see a bare copper wire screwed around a terminal inside the box.
If the white wire is by itself (or tied in with other white wires) with a wire nut (cap) on it, don't worry about it and don't let it confuse you, it's just an extra wire that's not needed for the switch to work. The only case of where you'll see a white wire connected to a switch is if 14-2 wire was used instead of 14-3 wire (like in your case). 14-2 has a black, white, and bare copper wire. 14-3 has a black, red, white, and bare copper wire. The 14 just means the gauge (thickness) of the wire.
And to confuse you even more, another case of seeing a red wire connected to a switch is if the circuit is a "3-way" circuit whereas there are 2 or more switches controlling the same light. In your case though, I'm assuming this dimmer switch is the *only* switch controlling your light given your description. Keep in mind, YouTube is a great source for tutorials on doing electrical work if you need it. Just remember to kill the power to the circuit you're working on. Anyway, hope this helps, and good luck.Best answer · 1House Wire Colors0Since this is an old house I would not assume anything, I may hook up a new switch wire per wire, but unless I opened the light fixture and confirmed the connection I would not connect any unconnected wire.
That being said, since you have two colored wires then the white should only be used as a neutral. The hot and switch leg back to the light should be black and red, but which is which is anybodies guess.
A ground wire is probably not present in the j-box you are dealing with, it was not required for many years, and probably do not have any grounded connection point in the light j-box either. You would just be connecting the boxes together if you used this "spare" wire, but not actually grounding anything, and could create a larger hazard by doing so.1This Site Might Help You.
what do wire colors mean (old house)?
I have an old house and am replacing a dimmer switch in the kitchen.
The old switch is has only 2 wires coming out of the switch that are both black.
From the wall 2 wires connect to the 2 black wires on the switch, one is black which I have concluded is hot and the other is red, which must be..0These would be normally. You should have them checked before you connect something.
Black is hot
Red wires are also used for hot wires, switch legs (like to a ceiling fan), and are the second hot wire in 220-volt installations. Another useful application is the interconnect wire between two hardwired smoke detectors.
A ground would be green or bare.1In Canada or the USA, someone has used a 3 conductor cable to wire from the light to the switch. The power cable is at the light. They only need two wires so they used the black wire to bring power to the switch and the red wire feeds the light when the switch is on.
The white wire should be capped at both ends to prevent it from being accidentally power up.
If you are not sure what you are doing, get a qualified electrician to do the work.2For the best answers, search on this site https://shorturl/axtkq
=== look at the paperwork that came with the light sensor and find the diagram and if that does not help then e-mail or call the Levithon 800/888 number and request that they e/m you the directions to wire the sensor === if your home does not have ground wires then it is time that you get a professional electrician to youe house and change out wires for three wires in a thick white plastic sheath === no ground in your house means that your computer is not grounded and that my friend can cost you the CPU or the L-top if you have a voltage surge or a power strike or a lightening strike [[[ lightening can travel underground for about one and one half miles --- fixit === also you need a GFCI plug in your bathroom for safety..0Red live
That's what it should be but once found a light fitting with 6 black wires. That was fun
Remember where the wires came out of. it should say on the switch which wires go where and this tell you what each wire is.
Always test all wires and always have an approved electrician do the work.0Black is negative. Red is positive, And white is neutral. Look at a batt. in your car. Red is hot. White is ground.0
White, Black and Red wire question | This Old House
I'm installing a new light fixture in the bathroom of a house we are remodeling. It is a simple white and black wire fixture with the ground wire. The previous fixture had been removed before we took over. There are 2 white wires together, 2 black wires together and one red wire all capped off coming from the wall unit. One wall switch.GFCI outlet has 2 white and 2 black wires | This Old HouseFeb 23, 2012Both white and Black wire are carrying a load. | This Old Two Black and Two White wires for GFCI | This Old House Black and white wires both hot | This Old House See more results