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Old 01-29-2009, 04:52 PM   #1
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Are wire nuts allowed in residential panels? I cannot locate an Article in the 2005 code book.

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Old 01-29-2009, 04:57 PM   #2
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You can't find it becuase it's not there. They are allowed.

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Old 01-29-2009, 04:57 PM   #3
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Are wire nuts allowed in residential panels? I cannot locate an Article in the 2005 code book.

I would read art. 312.8 and make sure you read the entire first sentence
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Old 01-29-2009, 05:05 PM   #4
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I would read art. 312.8 and make sure you read the entire first sentence
So, after reading the article, as long as the percent fill does not exceed 75% of the cross sectional area of the enclosure, it is permitted to use wire nuts inside residential panels.
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Old 01-29-2009, 05:24 PM   #5
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... it is permitted to use wire nuts inside residential panels.

Just to clarify...it is not limited to "residential" panels.
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Old 01-29-2009, 05:39 PM   #6
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So, after reading the article, as long as the percent fill does not exceed 75% of the cross sectional area of the enclosure, it is permitted to use wire nuts inside residential panels.
You are correct... and I might add that it's almost impossible to fill the gutter space to 75%. That's hundreds and hundreds of conductors. 75% gutter fill is defined as the amount of wire you can bash in there with the butt of your hammer and still get the cover on.
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Old 01-29-2009, 05:51 PM   #7
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75% gutter fill is defined as the amount of wire you can bash in there with the butt of your hammer and still get the cover on.
Can you spell it out in layman's terms?

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