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#52733 - 06/03/05 10:35 PM Three Phase GFCI  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA


Joe Tedesco, NEC Consultant

Work Gear for Electricians and the Trades

#52734 - 06/04/05 08:15 AM Re: Three Phase GFCI  
Ryan_J  Offline
Moderator
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
Joe, I am assuming you were searching this on my account after our conversation last night. Thank you very much,
Ryan


Ryan Jackson,
Salt Lake City

#52735 - 06/04/05 04:58 PM Re: Three Phase GFCI  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
Ryan,

Looks like the GFCI, would cost a little more then the waterfall.
Great story, good read.


#52736 - 06/04/05 05:06 PM Re: Three Phase GFCI  
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
Ryan

No problem, glad to help.

JT


Joe Tedesco, NEC Consultant

#52737 - 06/04/05 05:26 PM Re: Three Phase GFCI  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
Joe,

Thank you, UL Spa info helps, me understand how, the inspector looked at the job.

Les


#52738 - 06/06/05 01:30 PM Re: Three Phase GFCI  
BigJohn  Offline
Member
Joined: Mar 2004
Posts: 391
Boston, MA
It's a 1,200 amp, 3phase GFCI that's designed for "personnel protection"? Does that mean that it has 5mA trip level, I thought that was impossible. And if it doesn't, how is it still for personell protection...? [Linked Image]

-John


#52739 - 06/07/05 03:46 AM Re: Three Phase GFCI  
C-H  Offline
Member
Joined: Sep 2002
Posts: 1,497
Stockholm, Sweden
Cool story.

Bender makes some rather unusual GFI units, including ones for DC and high frequency AC. No doubt they can make such a thing as a 5mA 1200A GFI.

We use one model to detect faults on 1000 Hz systems. It is configured for the European level of personell protection, 30 mA, but I don't think there is anything to prevent it being made for the American 5 mA level instead. The unit comes with a separate "donut" and doesn't have a rated current, only a maximum fault current. (14 kA if memory serves me)

[This message has been edited by C-H (edited 06-07-2005).]



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