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Re: Electrical wire sizing
[Re: blumsden]
#2174611
07/24/17 03:06 AM
07/24/17 03:06 AM
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Joined: Oct 2004
Posts: 663
Marion County
lonewolf
OP
4 point
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OP
4 point
Joined: Oct 2004
Posts: 663
Marion County
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I wouldn't run aluminum. I would run #2 thhn copper for the 100 amp and #8 thhn for the 50 amp. Why no aluminum
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Re: Electrical wire sizing
[Re: auburn17]
#2174699
07/24/17 05:16 AM
07/24/17 05:16 AM
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Joined: Jun 2016
Posts: 5,509
Luverne
tbest3
12 point
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12 point
Joined: Jun 2016
Posts: 5,509
Luverne
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You will be fine using aluminum, I would go with the 2/0 due to the distance and voltage drop.
I think you can get by with a #4 aluminum on the 50A service. #2 would be over kill since it is rated for 90A ^^^^ 2/0 aluminum gives you about 2.08% voltage drop at the end of a single phase 100 amp run of 230 ft. 4 AWG aluminum gives you a 1.44% voltage drop at the end of your single phase 50 amp run of 120 ft.
Last edited by tbest3; 07/24/17 05:25 AM.
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Re: Electrical wire sizing
[Re: lonewolf]
#2174818
07/24/17 07:01 AM
07/24/17 07:01 AM
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Joined: Aug 2002
Posts: 22,670
Morgan Co.
Dixiepatriot
Freak of Nature
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Freak of Nature
Joined: Aug 2002
Posts: 22,670
Morgan Co.
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Will that big aluminum wire connect in a sub panel? I think your biggest trouble will be terminating that 3" conduit in that 100amp panel.
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Re: Electrical wire sizing
[Re: Dixiepatriot]
#2174898
07/24/17 09:05 AM
07/24/17 09:05 AM
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Joined: Aug 2010
Posts: 1,950
Molino, FL
auburn17
8 point
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8 point
Joined: Aug 2010
Posts: 1,950
Molino, FL
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Will that big aluminum wire connect in a sub panel? I think your biggest trouble will be terminating that 3" conduit in that 100amp panel. I agree, is the 3" already in the ground? If not step down to 1 1/2" for the 50A run and 2" for the 100A run. Keep in mind on most of this aluminum you can get it direct burial, so you don't need conduit. Price wise you should be looking around: 2/0-2/0-2/0-1: $2.00 per ft 4-4-4: $.70 per ft
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