gfci protection

[hawkeye23]

I was reading 110.4 c in nfpa 70 e and came to relize from the wording all cord and plug equipment above 125 volt need Gfci protection.
So I 'm thinking all our portable pumps/motors using 460v need to be gfci protected. Would this be correct ?
Never gave any thought about anything above125 v cords.

 

[K8MHZ]

I would guess that most of us do not have a copy of NFPA 70E: Standard for Electrical Safety in the Workplace?

Free access is available, but one has to create an account (or already have one) to view the text.

Without being able to read the text, it will be difficult to give you an answer.

 

[ActionDave]

I was reading 110.4 c in nfpa 70 e and came to relize from the wording all cord and plug equipment above 125 volt need Gfci protection.
So I 'm thinking all our portable pumps/motors using 460v need to be gfci protected. Would this be correct ?
Never gave any thought about anything above125 v cords.

I don't see how that would be possible since there is no such thing as a 480V GFCI.

 

[Jraef]

I don't see how that would be possible since there is no such thing as a 480V GFCI.

I agree, something is being misinterpreted here. 110.4 c is not a valid reference for anything in the 2012 NFPA 70E, I don't have an older copy to check on.

110 (C) is about GFCIs, but does not have a (4)

(C) Ground-Fault Circuit-Interrupter (GFCI) Protection.
(1) General. Employees shall be provided with groundfault
circuit-interrupter (GFCI) protection where required
by applicable state, federal, or local codes and standards.
Listed cord sets or devices incorporating listed GFCI protection
for personnel identified for portable use shall be
permitted.
(2) Outdoors. GFCI protection shall be provided when an
employee is outdoors and operating or using cord- and
plug-connected equipment supplied by 125-volt, 15-, 20-,
or 30-ampere circuits. Where employees working outdoors
operate or use equipment supplied by other than 125-volt,
15-, 20-, or 30-ampere circuits, an assured equipment
grounding conductor program shall be implemented.

Don't know how you got to what you stated from that though. What it this?
"Where employees working outdoors
operate or use equipment supplied by other than 125-volt,
15-, 20-, or 30-ampere circuits, an assured equipment
grounding conductor program shall be implemented."

An "assured equipment grounding conductor program" does not mean a GFCI if that's what you were thuinking. It means, your employees cannot willy-nilly scab together some BS patch cord crappy extension for outdoor equipment, it must be a properly installed equipment connection with a grounding conductor. A code compliant circuit would meet that requirement.

The NFPA 70E is not a "new code", it is a PROGRAM of ensuring the safety of workers. Following the NEC is still following the NEC, but if you DON'T follow the NEC, and someone gets hurt, and OSHA investigates, and you do NOT have a program of electrical safety, (LIKE following the NFPA 70E guidelines), then for all intents and purposes you are out of business.

 

[david luchini]

I agree, something is being misinterpreted here. 110.4 c is not a valid reference for anything in the 2012 NFPA 70E, I don't have an older copy to check on.

It's the 2015 NFPA 70E that is being referenced.

110.4(C)(3) Outdoors. GFCI protection shall be provided when an employee is outdoors and operating or using cord- and plug-connected equipment supplied by 125-volt, 15-, 20-, or 30-ampere circuits. Where employees working outdoors operate or use equipment supplied by greater than 125-volt, 15-, 20-, or 30-ampere circuits, GFCI protection or an assured equipment grounding conductor program shall be implemented.

I think the OP overlooked the "assured equipment grounding conductor program" when he said GFCI is "required."

 

[Jraef]

It's the 2015 NFPA 70E that is being referenced. ...

Huh. Interesting that whomever added "GFCI" to the NFPA 70E this year then missed the fact that the DEFINITION of a GFCI precludes it from existing for circuits above 250V!

Ground-Fault Circuit Interrupter (GFCI). A device intended
for the protection of personnel that functions to deenergize
a circuit or portion thereof within an established
period of time when a current to ground exceeds the values
established for a Class A device.

The UL listing standard for a Class A ground fault device is defined as being 240V or less.

Oh... duh, it doesn't SAY 250V (or even 125V to ground, which is what I was thinking)... must... learn... to... read...

 

[Dennis Alwon]

I guess this would help

http://www.ccixpress.com/cci/Marketing/literature/HD-ProGFCI_Brochure.pdf

The HD-PRO? Series by TRC features:? Portable, flexible and affordable heavy-duty GroundFault protection? Designed to trip within 25 milliseconds after GroundFault detection? Designed for high current, rugged environments? Ratings from 120 Volt. / 30 Amp / Single Phase, up to600 Volt. / 80 Amp / Three Phase? The HD-PRO? 6.10.30 models feature an adjustable triplevel selector.? Offers trip level flexibility ? 6, 10, or 30 mA.? Trip selector key lock feature increases workplace safety? Adjustability feature provides maximum protection ?avoids unwanted tripping? Patented GFCI/ELCI technology designed forswitching duty? Addresses the requirements of 29CFR1910