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#52733 - 06/03/05 07:35 PM Three Phase GFCI
Joe Tedesco Offline
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Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
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Joe Tedesco, NEC Consultant

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#52734 - 06/04/05 05:15 AM Re: Three Phase GFCI
Ryan_J Offline
Moderator

Registered: 08/19/03
Posts: 1355
Loc: 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
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Salt Lake City

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#52735 - 06/04/05 01:58 PM Re: Three Phase GFCI
LK Offline

Member

Registered: 01/21/03
Posts: 1721
Loc: New Jersey
Ryan,

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

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#52736 - 06/04/05 02:06 PM Re: Three Phase GFCI
Joe Tedesco Offline
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Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Ryan

No problem, glad to help.

JT
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#52737 - 06/04/05 02:26 PM Re: Three Phase GFCI
LK Offline

Member

Registered: 01/21/03
Posts: 1721
Loc: New Jersey
Joe,

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

Les

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#52738 - 06/06/05 10:30 AM Re: Three Phase GFCI
BigJohn Offline
Member

Registered: 03/06/04
Posts: 352
Loc: 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...?

-John

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#52739 - 06/07/05 12:46 AM Re: Three Phase GFCI
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: 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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