ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Photocell
by Docholiday. 01/22/18 10:52 AM
AreMetal Ladders Ever OK For Electrical Work?
by gfretwell. 01/22/18 01:15 AM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 14 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
AFCI #92567
03/26/05 01:23 PM
03/26/05 01:23 PM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
Washington...Not DC
would an AFI work, if you had a back up power (5kw generator) feeding the breaker?

The breaker would be fed through a manual transfer switch, one side of the switch from
the AFI and the other from the generator.

It seems like the breaker would be an intergal part of the neutral since the banch circuit is landed in it and then bonded to the nutral busbar. And if the breaker is de-energized would it be an open circuit when the generator tries to feed it?

Any thoughts would be appreciated.
Thanks.

2017 / 2014 NEC & Related Books and Study Guides
Re: AFCI #92568
03/27/05 12:42 PM
03/27/05 12:42 PM
T
tdhorne  Offline
Member
Joined: Mar 2001
Posts: 345
Maryland, USA
Use a double pole double throw transfer switch and it will be a non issue. If you transfer both the neutral and the hot the generator functions as a derived system. The easiest way to provide grounding will depend on how your generator is configured. If its neutral is bonded to the frame then you will need to run a Grounding Electrode Conductor (GEC) from your house's grounding electrode system to the bonding lug on your generator. If the generator neutral is not bonded to the generator frame then it will be easier to bond the neutral to ground in the transfer switch and run the GEC to the grounding electrode system from the switch's enclosure.
--
Tom H


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison
Re: AFCI #92569
03/27/05 09:10 PM
03/27/05 09:10 PM
P
pdh  Offline
Member
Joined: Jan 2005
Posts: 354
How do you intend to comply with 210.12 during the time the generator is supplying power?

Re: AFCI #92570
03/28/05 12:55 AM
03/28/05 12:55 AM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
Washington...Not DC
well 702.3 is specific.
the only thing left is to get a blessing from the "ahj" and filling out a proposal to the panel for an exception here.


Featured:

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

 

Member Spotlight
CDS
CDS
Nicholson Ga
Posts: 34
Joined: June 2006
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
Potseal 15
sparky 15
Popular Topics(Views)
243,595 Are you busy
180,393 Re: Forum
170,862 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.020s Queries: 14 (0.003s) Memory: 0.9579 MB (Peak: 1.0895 MB) Zlib enabled. Server Time: 2018-01-22 18:16:29 UTC