The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
Yesterday at 06:29 PM
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
sparkyinak 9
Texas_Ranger 8
Potseal 6
Who's Online
0 registered (), 194 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#175044 - 02/20/08 11:09 AM Service Conductor size
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: 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

Top
2014 / 2011 NEC & Related Books and Study Guides
#175045 - 02/20/08 01:40 PM Re: Service Conductor size [Re: Yoopersup]
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: 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.

Top
#175046 - 02/20/08 02:50 PM Re: Service Conductor size [Re: Tom]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
That is the way it was Calculated.

Top
#175057 - 02/21/08 08:13 AM Re: Service Conductor size [Re: Yoopersup]
Alan Nadon Offline
Member

Registered: 03/10/05
Posts: 398
Loc: Elkhart, IN. USA
With six disconnects, and as calculated, it is Code compliant. Good to go. \:\)
_________________________
Alan--
If it was easy, anyone could do it.

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals