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Residential mulitfamily service #9307
04/23/02 07:09 PM
04/23/02 07:09 PM
E
Electricmanscott  Offline OP
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
Looking for some info regarding panel size. Example residential 200 amp service feeding three apartments and a landlord panel. What size panels? Where in the book is there info on exceeding sevice conductor ratings?
Thanks, Scott

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Re: Residential mulitfamily service #9308
04/23/02 08:55 PM
04/23/02 08:55 PM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,274
Fullerton, CA USA
If you're going by '02 Code, try Table 310.15(B)(6).
Your load will be determined by the usual calculation methods.

Re: Residential mulitfamily service #9309
04/24/02 06:51 AM
04/24/02 06:51 AM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
'02 Code.
230.80
230.90(A) Exception 3.
The service conductors need to be adequate for the calculated load.
But, the combined rating of "up to six service disconnects" is allowed to exceed the SE conductors ampacity as long as any individual disconnect is adequately sized for the load it serves.

Scott,
I'm not sure this is what you're asking, but the NEC Handbook details the principal described above.


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