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Newly installed light fixture won’t turn off

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  #1  
Old 08-15-19, 08:58 AM
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Newly installed light fixture won’t turn off

Hello guys, appreciate your help.

I just put up a new light fixture on the ceiling. The light fixture comes with three wire: black, white and green/yellow.
The ceiling box has four wires: black, white, green and yellow. And only the yellow wire is a thin and single strand one. It looks like this
[img]blob:https://www.doityourself.com/a8bf6179-3ef0-480e-b9ee-2d04ef0d145a

So I connected black to black, white to white, and the green/yellow to green. The yellow wire in the ceiling box was left intact.

The light fixture turned on immediately after I put the power back on and the switch cannot turn it off!
What should I do now?
 
  #2  
Old 08-15-19, 09:11 AM
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Welcome to the forum.
Where are you located (for code reference) and was this a newly installed wire/switch or and existing and you are simply replacing the light fixture?
 
  #3  
Old 08-15-19, 09:47 AM
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Connect the fixture black to the yellow. Cap the black wire.
 
  #4  
Old 08-15-19, 09:56 AM
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Shouldn't be a problem at all if the new fixture was connected like the old fixture.
 
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Old 08-15-19, 12:36 PM
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Thank you all for replying

I live in Toronto, Canada. I did some research and found out that in Canada the ground wire is supposed to be either green or green/yellow.

FYI, I wasn’t replacing the ceiling light fixture. There was no light fixture prior.
 
  #6  
Old 08-15-19, 12:54 PM
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Hi, so there was just a box there with the conductors inside, correct?
Pull the switch out of the box and see what color conductors are connected to the switch.
Geo
 
  #7  
Old 08-15-19, 12:56 PM
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I live in Toronto, Canada. I did some research and found out that in Canada the ground wire is supposed to be either green or green/yellow.
It can also be a bare uninsulated wire.
 
  #8  
Old 08-16-19, 05:08 AM
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There is a lesson to be learned here, Don't connect a load to a cable unless you know how the cable is connected on the other end. You are fortunate you didn't destroy the fixture or hurt yourself. Out of curiosity, how did you know there was no power to the cable in the ceiling box and started touching the metal of the wires?
 
 

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