ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 10
Admin 4
Recent Posts
Windows 10, who's upgraded?
by ElectricianBud. 05/27/17 11:02 AM
How do you find a good employee?
by ElectricianBud. 05/27/17 10:58 AM
Recall notice: Bosch Solar panels
by ElectricianBud. 05/27/17 10:53 AM
Correct rotation, wrong sequence
by Potseal. 05/27/17 12:15 AM
Dryer, Range grounding from "Main" panel
by sparkync. 05/25/17 05:49 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
236,896 Are you busy
171,897 Re: Forum
164,796 Need opinion
Who's Online Now
0 registered members (), 67 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#193792 - 04/20/10 01:50 AM feeder sizing  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 216
Washington...Not DC
how should I calculate generator feeders? I have a 17 KW generator 71 amps, 310.15 allows #4 for 100 amps, but does it allow #6 for 71 amps? Do I size according to 310.16 which is still #4?
Thanks,
H20


2017 / 2014 NEC & Related Books and Study Guides

#193795 - 04/20/10 03:32 AM Re: feeder sizing [Re: watersparkfalls]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,080
Estero,Fl,usa
You can only use 310.15(B)(6) if this is a main feeder for the entire dwelling, basically an extension of the service entrance from a disconnect. That is, by definition, a #4 minimum. In no case could you interpolate down to a #6.
Any other application has to use 310.16.


Greg Fretwell

#193802 - 04/20/10 12:46 PM Re: feeder sizing [Re: gfretwell]  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 216
Washington...Not DC
thanks Gfretwell



Member Spotlight
Potseal
Potseal
Saskatchewan
Posts: 223
Joined: February 2013
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 15 (0.003s) Memory: 0.7515 MB (Peak: 0.8761 MB) Zlib enabled. Server Time: 2017-05-27 19:28:21 UTC