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  #1  
Old 11-12-2011, 07:56 PM
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cooktop wiring question

I'm replacing a cooktop with a used cooktop. The wiring is shared with a wall oven. The wall and oven have 4 wires - red, white, black and bare. The outgoing cooktop has 3 wires - red, white and black. The incoming cooktop has 3 wires - red, black and bare. Shoul I wire the bare wire from the incoming cooktop to the bare wire from the wall or the white wire from the wall?

Thanks,
Sixto
87 300D

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  #2  
Old 11-12-2011, 08:05 PM
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The incoming cooktop is missing a white wire. Is there a wiring sticker on the new cooktop?
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Old 11-12-2011, 08:16 PM
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Quote:
Originally Posted by Chas H View Post
The incoming cooktop is missing a white wire. Is there a wiring sticker on the new cooktop?
Not necessarily -- especially if it doesn't have any electronics like a clock, it may just take 240V for the burners and not have a neutral leg for 120V between it and one of the hots. Pure 240V devices do exist.

If there's no white wire:
* Red to red (hot #1)
* Black to black (hot #2)
* Bare to bare (ground)
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Old 11-12-2011, 08:20 PM
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Originally Posted by spdrun View Post
Not necessarily -- especially if it doesn't have any electronics like a clock, it may just take 240V for the burners and not have a neutral leg for 120V between it and one of the hots. Pure 240V devices do exist.

If there's no white wire:
* Red to red (hot #1)
* Black to black (hot #2)
* Bare to bare (ground)
Good point. I am (possibly) corrected.
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  #5  
Old 11-12-2011, 09:24 PM
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No sticker. It works with red, black and bare hooked up.

Thanks!

Sixto
87 300D

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