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#48386 - 02/10/05 09:05 AM New 3" hub code for Resi Load Centers??
BillK Offline
Junior Member

Registered: 12/22/04
Posts: 3
Loc: South Elgin,IL ,USA
Has anybody heard anything about new codes reguarding 3" hubs to a residential load center? Anybody have details???
Have heard it might be for panels 400A and up.
Bill K

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#48387 - 02/10/05 04:14 PM Re: New 3" hub code for Resi Load Centers??
russ m Offline

Registered: 02/22/03
Posts: 165
Loc: Burbank,IL,USA
Hi Bill,

I have not heard anything.
310.15(B)(6) allows 400 KCMIL THWN copper for a 400 amp dwelling service.
You could go traditional and use 500 KCMIL THWN, both fit in 2 1/2 per Annex C - Table C1 EMT and C4 IMC. In table C8 for RMC, 500 KCMIL would have to be in 3 inch.

#48388 - 02/10/05 07:00 PM Re: New 3" hub code for Resi Load Centers??
HotLine1 Offline


Registered: 04/03/02
Posts: 6792
Loc: Brick, NJ USA
Welcome to the forums.....
Could you be refering to a utility (POCO) requirement???

Here in NJ (PSE&G) a 'mast' service requires a 2 1/2" RGC minimum.



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