Wiring a vent hood with an unsheathed wire

grumpydaveMarch 26, 2012

I'm installing a new vent hood in my kitchen. It's an under-cabinet model and the cabinet above has a standard single outlet.

The hood has the black and white wires sheathed but a separate green wire unsheathed. Can I connect those wires to a three-prong plug? I assume not because of the unsheathed green wire. If not is there a simple and legal way to "sheath" them together so that I can use a plug?

If not I'm considering cutting the receptacle end off an old power cord and using wire nuts to connect it to the hood wiring inside the hood where they're accessible, then running the power cord out to the outlet. If that's no good then I guess I'll have to get some flexible conduit and hard-wire it.

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What do the installation instructions say? It sounds like your new vent hood wants to be hard-wired. What's not clear is why you believe you need conduit. Generally, the cable extending from the wall is long enough to make the connection inside the hood. Could you provide more details?

    Bookmark   March 26, 2012 at 9:01PM
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The instructions do say to hard wire. Oddly, I just found that in a separate section from the installation instructions.

What cable extending from the wall? Right now there's an outlet. The wires coming out of the hood go into the cabinet to be run to the outlet/junction box. Since these wires are accessible inside the cabinet do they not need to be run in a conduit for a hard wire installation?

    Bookmark   March 27, 2012 at 12:48AM
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Normally, the wire extends out of the wall, and the splice (with wire nuts) is made inside the hood. In your case, you'd need to remove the receptacle, and extend the wire. Since the junction box would still be accessible, it should be okay to have a splice there, and inside the hood. You'll need to cover the junction box with an appropriate cover with a clamp for the extending cable. Cable inside a cabinet does not normally need to inside conduit unless physical damage is likely or local codes say otherwise.

    Bookmark   March 27, 2012 at 9:12PM
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Other than conduit, armor-clad or metal-clad might be just fine.

    Bookmark   March 28, 2012 at 3:28PM
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"Other than conduit, armor-clad or metal-clad might be just fine."

AC and MC do not get all that much relief form 'likely to be damaged' damaged over NM.

Put a faceplate with a hole on the box, attach a cable clamp to the faceplate through the hole, and run the cable to the inlet box of the hood and terminate it using another cable clamp and hook the wires up.

    Bookmark   March 28, 2012 at 4:01PM
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Its very common for hoods to have a hookup to a Pigtail ( standard three prong plug ) The codes do require that you have access to the plug. It cant be behind a duct cover or in a sealed cabinet/. The green wire should ground on the hood and connect to the household electrical. The pigtail does not need to have a high heat rating on the wires. It should be above the hood and not inside the hood where it would be exposed to heat

Here is a link that might be useful: vent a hood dealer

    Bookmark   December 15, 2014 at 1:32AM
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You can remove the receptacle and add a piece of Romex into the box, drop it down the inside of the wall and punch it out right where the knockout is on the hood and splice it inside the hood. No wire inside the cabinet this way.

    Bookmark   December 16, 2014 at 9:18PM
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