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#175044 - 02/20/08 03:09 PM Service Conductor size  
Yoopersup  Offline
Member 		Joined: Mar 2003
Posts: 822
Michigan
Total Load 3200 amps , Switch gear rated at 4000 amps

9 sets of 3-500 Kcmil & 1-4/0 neutral = 3420 amps.

Load 3200 Wire 3420 gear 4000 amps.

No main Six 800 amp switches

Legal per 230.80& 230.90 a EXCEPTION 3

READ PAGE 150 & 152 2005 NEC CODE HANDBOOK

Service Conductors Adquate for Load, Gear rated Above Load
Should be good to go Right.

Whatca say guys???
Yoopers

2017 / 2014 NEC & Related Books and Study Guides

#175045 - 02/20/08 05:40 PM Re: Service Conductor size [Re: Yoopersup]  
Tom  Offline
Member 		Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
Provided that your 3200 amp load is 125% of the continuous load plus 100% of the non-continuous load, I'd say OK.

Few things are harder to put up with than the annoyance of a good example.

#175046 - 02/20/08 06:50 PM Re: Service Conductor size [Re: Tom]  
Yoopersup  Offline
Member 		Joined: Mar 2003
Posts: 822
Michigan
That is the way it was Calculated.


#175057 - 02/21/08 12:13 PM Re: Service Conductor size [Re: Yoopersup]  
Alan Nadon  Offline
Member 		Joined: Mar 2005
Posts: 399
Elkhart, IN. USA
With six disconnects, and as calculated, it is Code compliant. Good to go. smile

Alan--
If it was easy, anyone could do it.


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