Oven and Plastic Box

tom_in_scNovember 16, 2010

Hello all,

I have a situation that I need to figure our how to handle. I'm installing a wall oven. It's a convection oven rated for a 20amp breaker. It has a whip about 4 or 5 ft long -plenty to reach the junction box. Here's the problem. What's mounted in the wall is a single deep plastic box. I'd really prefer to have a surface-mounted metal box, but can I make this work (legally and safely) using the plastic box?

Thanks!

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Ron Natalie

Put a 20A receptacle in and a plug on the oven cord?
Use the recessed box to junction to a short piece of cable to reach your surface mount box placed adjacent?

    Bookmark   November 16, 2010 at 5:35PM
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tom_in_sc

Thanks for the suggestions.

I thought it had to be hardwired?

Do I need to worry about heat from the oven and the plastic box?

    Bookmark   November 16, 2010 at 5:59PM
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abnorm

Try an extension box......

Here is a link that might be useful: Extension box

    Bookmark   November 16, 2010 at 9:18PM
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joed

Just hardwire it to the existing box. There is no problem using in wall plastic boxes.

    Bookmark   November 17, 2010 at 8:30AM
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tom_in_sc

Joed,
Do "they" make a cover with a punch-out to run the whip wires through? What connector would I use? An MC squeeze connector?

    Bookmark   November 17, 2010 at 11:36AM
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brickeyee

"Do "they" make a cover with a punch-out to run the whip wires through? What connector would I use? An MC squeeze connector?"

Blank covers with a knockout are available.

The connector is whatever type of conduit the whip is made from.

If the cable is large you may need to find an electric supply house (not a big box store).

    Bookmark   November 17, 2010 at 5:01PM
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DavidR

I second abnorm's suggestion.

    Bookmark   November 17, 2010 at 8:38PM
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tom_in_sc

Thanks everyone!

I like the extension box idea, but in it's current location I'm not sure it would clear the oven. There is about an inch overlap between the box location and top of the oven (the convection fan part I think).

There is room to use the existing box, so I'll probably just do that. Just to be sure - no worries about the oven's heat and the plastic box??

The whip looks like MC (three insulated wires and bare ground) thugh I doubt that it is truly MC, so I'll go with the squeeze connector.

    Bookmark   November 18, 2010 at 8:52AM
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brickeyee

"Just to be sure - no worries about the oven's heat and the plastic box?? "

Unless the installation instructions require metal, plastic is fine.

Most residential ovens are 'zero clearance' to combustibles.

    Bookmark   November 18, 2010 at 1:25PM
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