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Mike G.
Mike G., Master Electrician
Category: Electrical
Satisfied Customers: 6995
Experience:  Proven Professional 46 years Experience
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I replaced a can light in the ceiling. I then installed a

Customer Question

I replaced a can light in the ceiling. I then installed a dimmer switch. The light stays on all the time.
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: I put the swithc and bulb in last night and discovered the problem.
JA: Do you plan on doing the work yourself?
Customer: I have been. My son in law helped install all the other can lights which go to a seperate switch.
JA: Anything else we should know to help you best?
Customer: I went back and removed the dimmer swtich and put the old switch back and still the light stays on. I have a set of wires (b, w, and g,) coming in from the top and bottom. The top black wite is hot.
Submitted: 3 months ago.
Category: Electrical
Expert:  Mike G. replied 3 months ago.

Hi, I'm Mike G and I'll be assisting you. Having only a black and white at the switch indicates a miswire at the fixture. Open it up and tell me the count, colors and connections.

Customer: replied 3 months ago.
I have two cables of Romex coming into the box. The one from the top has a black a white and a ground.
The one from the bottom is the same.
When I wired teh can light there were 3 black, 3 white and 3 ground.
Expert:  Mike G. replied 3 months ago.

From your description the feed is in the switch box to the one light, which means the fixture should only be connected to one set of wires and the other dets connected by themselves. The fixture is being fed from 2 sources.

Customer: replied 3 months ago.
How would I find out where the other source is? There never was another switch.
Expert:  Mike G. replied 3 months ago.

Do you have a 2 wire voltage tester?

Customer: replied 3 months ago.
I disconnected the switch and the light is still on. I tested one of the three black wires going to the light and it is always hot.
Customer: replied 3 months ago.
im calling an electrician
Expert:  Mike G. replied 3 months ago.

You need to identify the wires from the dimmer and connect only them to the fixture. Then connect the others together.

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