8 GA wire for clothes dryer

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Old 11-23-11, 04:50 PM
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8 GA wire for clothes dryer

I am relocating a clothes dryer, and the existing outlet is too far away to be used, and there is not enough wire to re-route to where the new outlet will be.

I have some 8 GA wire left over from a previous job that is long enough, so I want to use it rather than buy some new 10 GA.

I just want to confurm that there are no problems doing this (and connecting to current 30A breaker).

Also want thoughts of surface-mounting a junction box and adding the extra 10' of 8 GA wire needed.

I presume the first choice is better (safer?).

Thanks for your help!
 
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Old 11-23-11, 06:37 PM
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#8 is fine but:
What kind of wire? Do you mean cable not wire? If cable it must be 8-3 plus ground. Is the dryer receptacle 3-wire or 4-wire? A 3-wire circuit can not be extended.
 
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Old 11-23-11, 06:46 PM
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Also, is it copper or aluminum wire?
 
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Old 11-23-11, 07:09 PM
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It's 3 wire (copper) with ground. NMD90, if I recall correctly (not at hand).
 
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Old 11-24-11, 05:48 AM
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Wire Gauges

I would not mix wire gauges in the same branch circuit.
 
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Old 11-24-11, 07:13 AM
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Originally Posted by TomLusk View Post
It's 3 wire (copper) with ground. NMD90, if I recall correctly (not at hand).
But is the original circuit 4-wire or 3 wire?

Replies based on US code but Canadian should be similar.
 
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Old 11-24-11, 09:02 AM
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Hi Ray:

The original circuit is 3 wire red/white/black plus ground. New is the same.

Tom
 
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Old 11-24-11, 09:20 AM
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The original circuit is 3 wire red/white/black plus ground. New is the same.
That would be considered a 4 wire circuit. You can extend it for your dryer with additional #8 or #10 NM cable as long as it is protected by no more than a 30 amp breaker. Although it isn't always adviseable to mix wire sizes, it wouldn't be a code violation. As Ray stated


Replies based on US code but Canadian should be similar.
 
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