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Old 09-29-2010, 04:03 PM   #16
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Electrical/wiring concerns


scuba dave... you mean #4 or use #3? You repeated saying #4 so I just want to make sure if it's #4 or #3. Thank you!


also realized i typed scuba steve before... interesting how the mind relates with error.

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Old 09-29-2010, 05:41 PM   #17
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Electrical/wiring concerns


Sorry....I meant #3 for 100a for a sub
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Old 09-30-2010, 12:22 PM   #18
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Electrical/wiring concerns


Quote:
Originally Posted by Scuba_Dave View Post
I thought #4 THWN is only good for 85a ?
Quote:
Originally Posted by frenchelectrican View Post
J.V.

I just don't want this get missunderstood but I know you mention #4 THHN/THWN conductor size.

Normally I will recommed to use the #3 THHN/THWN conductor that is good for 100 amp breaker.

That is for feeder useage not the Service entrance useage that what it will affect it.

Merci.
Marc
Sorry guys. I should have said #3 Cu.
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Old 12-01-2010, 12:14 PM   #19
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Electrical/wiring concerns


became to busy with person/work life. had an electrician through the family network come over and run the line while i was out. he ran two #6 as hot, one #8 as neutral and a #10 as ground.

He said all i have to do is buy the 60 amp double pole breaker and a new box for the garage and i'll be set.

now the question... what size box? i need at least 8 spaces.

thanks again for all the help
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Old 12-01-2010, 01:04 PM   #20
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Electrical/wiring concerns


You can use any size box, as long as it has a main breaker. I usually just use a 20-space 100A main breaker panel. The rating of the main breaker on the sub-panel doesn't matter, as long as it's at least as high as the breaker feeding it. It's just used as a disconnect, not for protection. The subpanel must also have separate bars for the neutrals and grounds. Most of the time, the separate ground bar must be purchased as an add-on.

I'm not sure how I feel about that #8 for a neutral, though. I thought code only allows for an undersized neutral in some very specific cases. I'll defer to the pros here for that.
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Old 12-01-2010, 10:33 PM   #21
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Electrical/wiring concerns


Quote:
Originally Posted by inlovewithohio View Post
became to busy with person/work life. had an electrician through the family network come over and run the line while i was out. he ran two #6 as hot, one #8 as neutral and a #10 as ground.

He said all i have to do is buy the 60 amp double pole breaker and a new box for the garage and i'll be set.

now the question... what size box? i need at least 8 spaces.

thanks again for all the help
That part what the electrician did use one size smaller for netural IMO that do not really fly in most area I never do that route even it is classifed as feeder still the wisest move is use full size netural and be done with it.

{ Less issue with voltage drop. }

Merci.
Marc

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