Kitchen exhaust fan install

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Old 12-20-14, 09:01 PM
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Kitchen exhaust fan install

I am trying to install a exhaust fan in the kitchen, but I am having a little trouble with the wiring. They wires coming out the the wall and hood are only blk and white. Per the instructions manual, I am supposed to ground the wire to the green screw, but there is no wire to ground. What do I do? Isn't it dangerous if I don't ground the wire? Help would be much appreciated!
 
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Old 12-21-14, 01:22 AM
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Per the instructions manual, I am supposed to ground the wire to the green screw, but there is no wire to ground
It will work fine without a ground.
Isn't it dangerous if I don't ground the wire?
At most slightly less safe. You just have older wiring that was not grounded.

You could run a new cable with ground from the breaker box but that is not needed for it to work.

Above assumes original wiring is non metallic cable.
 
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Old 12-21-14, 05:12 AM
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They wires coming out the the wall and hood are only blk and white.
I hope this is some type of flex conduit, MC/AC/BX metallic cable, or NM cable and not just two individual wires sticking out of the wall. If it is, you have other issues.

Perhaps a picture would help.
 
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Old 12-21-14, 10:47 AM
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I don't know if these pictures will show, as I posted them through my phone. But there are two wires coming out from the walls, a black and white one. The inside of the wire looks like it's made of copper I think, but the wire itself is wrapped in some type of plastic.
 
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Old 12-21-14, 10:53 AM
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Pictures tell a thousand words.

You have a metal clad cable there with copper wires. Technically that is your ground.
That connector should fit right into a knockout on the exhaust fan. Tighten the locknut up snugly on the inside.
 
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Old 12-21-14, 10:57 AM
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So just connect the black and the white wires, and I should be good to go?
 
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Old 12-21-14, 11:02 AM
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Yes and attach the metal cable to the housing to supply the ground. That's the nice thing about metal clad cable and metal conduit...you have one less wire to run and pay for.
 
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Old 12-21-14, 11:19 AM
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Woohoo!! Thanks guys! I was kind of concerned about it! 😎
 
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