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Old 01-26-2009, 11:35 AM   #1
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Electric water heater

I bought a half build home with wiring already run. It has 10-2 wire running to the hot water tank location. My question is do I need 10-3 run to there or is 10-2 O.K? Can I make the white wire my red wire? Or do I have to have a neutral?

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Old 01-26-2009, 12:17 PM   #2
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10/2 is fine. Just "re identify" the white with a color like black, red, etc. Water heater's don't need a neutral.


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Old 01-26-2009, 12:18 PM   #3
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Usually checking the manufacturers instructions and your local authority will answer that. I've heard of some (actually, only once...I think the inspector was 'off base'...where was I suppose to attach the neutral wire??) jurisdictions requiring 10/3, but most dont. Tape/paint the white wire black at boh ends and you should be all set.

Just because you can, doesn't always mean you should
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