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Old 12-19-2009, 10:35 AM   #1
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green wire


I'm installing 20-amp receptacles and I'm wondering if the green grounding wire should be the same gauge (#12) as the black ("hot") and white wires.
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Old 12-19-2009, 11:42 AM   #2
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are you using romex?

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Old 12-19-2009, 11:45 AM   #3
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Romex or individual wires on a 20 amp circuit must all be the same size. So yes, all three must be #12.
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Old 12-19-2009, 01:01 PM   #4
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The ground or techniaclly the bond is usually a reduced size. I can't comment on what size it can be because it may be different in the US then in Canada.

In Canada if it was individual wires you would be permitted to use #14.
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Old 12-19-2009, 01:12 PM   #5
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With very few exceptions, in the USA, the ground must be the same size as the hots for all circuits up to 30 amps. Larger than 30 can be smaller.

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