3-wire House to 4-wire Cooktop


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Old 02-04-08, 09:45 AM
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Exclamation 3-wire House to 4-wire Cooktop

I've got black/white/bare coming out of the cabinets.

On my Jennair downdraft, I've got white/red/green/black.

Manual is useless!

Can someone match this stuff up for me?

The manual did say something about not using the green wire in a three wire install. So, that kinda helps.

I just need to know what colors to put together!

Thanks from a newbie!
 
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Old 02-04-08, 09:57 AM
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Originally Posted by USMCsilver
I've got black/white/bare coming out of the cabinets.
From an old range or cooktop? What is the AWG of the wire and what is the breaker size? What is the amperage requirement of the new cooktop?

On my Jennair downdraft, I've got white/red/green/black.
What's the model number?

Manual is useless!

Can someone match this stuff up for me?

The manual did say something about not using the green wire in a three wire install. So, that kinda helps.
The manual will have instructions for both a three-wire installation and a four-wire installation. You need to follow the three-wire (ungrounded) installation instructions.

I just need to know what colors to put together!
It is probably:

wall black -> cooktop black
wall white -> cooktop red
wall bare -> cooktop white and green

But, you may also need to attach a bonding strap or screw and verify the breaker size.
 
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Old 02-04-08, 10:18 AM
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Sorry -- I took out an old Jennair cooktop. It was installed in 1987, so it only had a 3-wire set-up.

I've replaced it with a new Jennair model number JED8230ADB; it has 4 wires.

http://www.jennair.com/catalog/produ...at=12&prod=103

Thanks again!
 
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Old 02-04-08, 11:03 AM
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Cool

Okay, here's what I did. Please confirm this is okay so my parent's house doesn't burn down:

wall black -> cooktop black
wall white -> cooktop red
wall bare -> cooktop white

The green wire -- well, I snipped it and taped it up.

Is this okay?
 
 

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