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#37690 05/04/04 10:46 PM
Joined: Dec 2003
Posts: 524
... I'm starting a good job,where the H.O. wants me to move the service to the other side of the house..(had to ask the PoCo inspector,..but he said it's OK)as well as upgrade to 200amps..AND wire the newly installed central A/C system..At first,I was gonna bus all the existing home-runs to the new panel location,...then I had an "Epiphany"...or a moment of "clarity"..Why can't I just install a main-lug panel,run 100 amp.SER, and use it as a sub-panel..Sounds easier,and cheaper than running all the home-runs over to the new panel...Does this make sense..??

.."if it ain't fixed,don't break a Licensed Electrician"
#37691 05/05/04 12:46 AM
Joined: Feb 2004
Posts: 1,438
Done all the time out here Russ..... Typically a "blank" will be out in the old meter socket.. Backfeed the bus with a breaker of proper rating for the panel & the feeders you will use & reconnect to a breaker at the new service..


#37692 05/05/04 04:26 PM
Joined: Mar 2004
Posts: 76
With that distance, it's the best option.
Good Idea !

#37693 05/05/04 06:13 PM
Joined: Mar 2004
Posts: 11
you will still need a main breaker in the sub panel enless the main panel is in sight of it.

#37694 05/05/04 06:31 PM
Joined: Dec 2003
Posts: 886
you will still need a main breaker in the sub panel enless the main panel is in sight of it.

You do? Where does it say that?


#37695 05/05/04 06:40 PM
Joined: Jan 2002
Posts: 1,457
Sounds like a good idea provided existing panel is worth saving. You probably already know that you won't need a main breaker in the sub panel. What table will you use to size the feeder?

#37696 05/05/04 09:46 PM
Joined: Mar 2004
Posts: 11
Article 230 chapter seven {230.91}

"The service overcurrent device shall be an integral part of the service disconnecting means or shall be located immediately adjacent thereto."
But we are talking about {feeders} to the sub panel.
I'm just thinking the sub. still needs a disconect right? because the main isn't with in sight and 50'.

#37697 05/05/04 09:49 PM
Joined: Mar 2004
Posts: 11
use table 310.15 {b}{6} for sizeing.

#37698 05/09/04 09:17 PM
Joined: Apr 2002
Posts: 192
Kody, look up the code definition of a "service" and you will see why the article you referenced does not apply to the subpanel in the case discussed.

…and I’m not even going to get into 310.15(B)(6). If the code making panel is going to do such a half-azzed job of explaining its position, then we as electricians should not be expected to read their collective mind.

#37699 05/09/04 09:55 PM
Joined: Jun 2003
Posts: 681
I agree with Triple, and as for 310.15(B)(6), that is not for the panels past the service equipment. Size the conductors from 310.16 (table).
The definition of service is in Art 100.


Pierre Belarge
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