See more about home wiring for california. Jim a handyman from irvine ca.
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Light switch off still has power. Why would a switch read 0 volts when the light is turned on and 120 volts when the light is turned off its actually quite simple. Hey jim try replacing the light bulbs. Last night the light just came on by itself. White wires tied together black wires to the switch terminals. Not enough to activate the load just enough for the light in the switch to work. Let say you have line hot going into a light bulb and the switch is connecting to the neutral side of the light bulb.
The light and switch single pole have been in operation for 15 years. When the switch is on you get full voltage but when the switch is off current flows from hot through the switch and into the high resistance ground fault. If that does not work then you may have lost a connection with the neutral wire of the circuit. Light fixture still hot with switch off 595231 0227. This electrical question came from. Would this be an indication of a switched neutral or am i missing something.
As i stated i changed the switch but the light stays on constantly even without being connected to the switch as long as the breaker is onthe box has three set of wires blackwhiteground from the fixture a blackwhiteground and a blackredwhiteground. In the off position the light passes a small amount of current through itself to the load. As far as im concerned any electrical problem is dangerous. Thanks for your electrical question jim. Something screwed up upstream of the switch. The following links will assist you with your electrical question.
I have power coming off of one lead and when i cross the leads the light still wont work. Second and of a greater concern to us when the outlet is off a lamp plugged into it turns off with the switch there is still power going through the outlet. A lighted switch has the light across the contacts. It goes power cable to switch then cable to light. This will cause a small voltage to be present at the receptacle. About 40 volts on the.
This fixture is at the end of the line. With the switch off it still had current at the sockets. I looked in the switch box and it appears to be wired correctly. What you are measuring is a floating voltage. One possibility is that the switch is wired on the neutral side and there is a ground fault between the switch and the outlet. The switch does not work.
Just to recap a phantom voltage is where a wire from a switch to a light or outlet runs next to a permanently live wire when the switch is off the ac voltage in the other wire can induce a voltage in the switched off wire.
Gallery of Light Switch Off Still Has Power
