ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Ronald and Nancy Reagan in GE commercials
by Bill Addiss. 03/13/19 08:12 PM
Carflex in an RNC connector?
by gfretwell. 03/12/19 05:21 PM
Reverse-feeding transformer in PV system?
by HotLine1. 03/11/19 08:37 AM
Vintage stage lighting and equipment catalogs
by Albert. 03/09/19 06:21 PM
TJX Recalls Heating Pads
by Admin. 03/08/19 09:33 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 45 guests, and 17 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Generator #69672
09/16/06 08:24 AM
09/16/06 08:24 AM
S
Sparks30  Offline OP
Member
Joined: Mar 2002
Posts: 125
Connecticut.usa
Having a bad morning,what is the wire size for 50 amp generator. Told the H.O 6-3. Doesn't want to pay. He already has 8-3 ran from previous install of portable. Thanks

Work Gear for Electricians and the Trades
Re: Generator #69673
09/16/06 08:49 AM
09/16/06 08:49 AM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
If it is 8/3 NM than it is rated 40 amps because of 334.80

If was 8/3 MC or 8 AWG in conduit it would be rated 50 amps.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Generator #69674
09/16/06 09:13 AM
09/16/06 09:13 AM
S
Sparks30  Offline OP
Member
Joined: Mar 2002
Posts: 125
Connecticut.usa
It is 8-3 NM thats why I told him that.

Re: Generator #69675
09/16/06 01:10 PM
09/16/06 01:10 PM
J
JJM  Offline
Member
Joined: Oct 2005
Posts: 100
Even #6 AWG is STILL inadequate.

Conductors for standby generators need to be sized not less than 115% of the generators nameplate rating: NEC 445.13. In this case 50A x 115% = 57.5A, so you need to go with #4 AWG minimum in this application.

Joe

Re: Generator #69676
09/16/06 01:22 PM
09/16/06 01:22 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Joe that is a good point.

However I believe Sparks gave us the breaker size which is not the same as the generators rating.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Generator #69677
09/16/06 03:35 PM
09/16/06 03:35 PM
S
Sparks30  Offline OP
Member
Joined: Mar 2002
Posts: 125
Connecticut.usa
I forgot about the 115% rule. The genorator is rated at 50 amps. It's been awhile since iv'e installed one. It is going to be one of those Bryant all-in-one setup. The only proble is that where he wants it is about 40' away. And he wants to try to reuse what he has. Thanks again Sam

[This message has been edited by Sparks30 (edited 09-16-2006).]


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Show All Member Profiles 
Top Posters(30 Days)
Admin 9
Albert 3
Popular Topics(Views)
253,915 Are you busy
190,340 Re: Forum
180,049 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.027s Queries: 14 (0.006s) Memory: 0.9744 MB (Peak: 1.1210 MB) Zlib enabled. Server Time: 2019-03-23 11:25:08 UTC