Receptacles

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robertepperly

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Location
Sand Springs, OK
I work for a manufacturing facility in Oklahoma and have been taught that our general duty receptacles used for portable tools, fans, and maintenance work need to be of the GFCI type. However, local electrical contractors bidding on our newest facility expansion tell us that we are wrong. Does article 590 or other articles address this installation?
 

roger

Moderator
Staff member
Location
Fl
Occupation
Retired Electrician
See all of 210.8(B) (210.8(B)(8) in particular) to see if it applies. There are also OSHA rules that will come into play.

Roger
 

raider1

Senior Member
Staff member
Location
Logan, Utah
If your company follows NFPA 70E as part of your Electrical Safety Policies and Procedures then Section 110.6(B) may be part of your company policy.

"(B) Maintenance and Construction. GFCI protection shall be
provided where an employee is operating or using cord sets
(extension cords) or cord- and plug-connected tools related to
maintenance and construction activity supplied by 125-volt, 15-,
20-, or 30-ampere circuits. Where employees 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."

NFPA 70E permits Listed Portable GFCI protection to provide the required GFCI protection.

Chris
 

FionaZuppa

Senior Member
Location
AZ
Occupation
Part Time Electrician (semi retired, old) - EE retired.
"(B) Maintenance and Construction. GFCI protection shall be
provided where an employee is operating or using cord sets
(extension cords) or cord- and plug-connected tools related to
maintenance and construction activity supplied by 125-volt, 15-,
20-, or 30-ampere circuits. Where employees 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."

Chris
"125-volt" ?? std 120v(rms) is actually greater than 125-volt for a good portion of each AC cycle.
 

jumper

Senior Member
And it's less than 125V for a good portion of each cycle too. What's your point?

Forget the sine wave stuff, but for consistency it prolly should say 120V.

If you look through the NEC, it usually refers to devices and such at 125V, but circuits at 120V.

For example compare 210.8 and 210.12.

All 125-volt, single-phase, 15- and
20-ampere receptacles

All 120-volt, single-phase, 15- and
20-ampere branch circuits
 

raider1

Senior Member
Staff member
Location
Logan, Utah
Forget the sine wave stuff, but for consistency it prolly should say 120V.

If you look through the NEC, it usually refers to devices and such at 125V, but circuits at 120V.

For example compare 210.8 and 210.12.

All 125-volt, single-phase, 15- and
20-ampere receptacles

All 120-volt, single-phase, 15- and
20-ampere branch circuits

UL 498 Standard for Attachment Plugs and Receptacles specifies that the rated voltage for receptacle be 125 volts, not 120 volts. That is the reason that when receptacle device ratings are referred to in the NEC that they use 125 volts not 120 volts.

Chris
 

jumper

Senior Member
UL 498 Standard for Attachment Plugs and Receptacles specifies that the rated voltage for receptacle be 125 volts, not 120 volts. That is the reason that when receptacle device ratings are referred to in the NEC that they use 125 volts not 120 volts.

Chris

Understood. The NEMA rec. chart uses 125V and 250V also

I was just commenting that the 70E section you posted referred to 125V circuits and that circuits are usually at the nominal 120V in the NEC. Just a silly inconsistency between the two docs.
 

raider1

Senior Member
Staff member
Location
Logan, Utah
Understood. The NEMA rec. chart uses 125V and 250V also

I was just commenting that the 70E section you posted referred to 125V circuits and that circuits are usually at the nominal 120V in the NEC. Just a silly inconsistency between the two docs.

I noticed that as well. It seems as though the NFPA 70E committee missed that the reference is to 125 volt circuits.

Chris
 

FionaZuppa

Senior Member
Location
AZ
Occupation
Part Time Electrician (semi retired, old) - EE retired.
You should check your code definition. A stated circuit voltage is to be assumed to be RMS when referring to the NEC.

.
and NEMA is not the NEC ;)

just a Q, is everything in NEC 60Hz Vac(rms) ??
 

FionaZuppa

Senior Member
Location
AZ
Occupation
Part Time Electrician (semi retired, old) - EE retired.
That definition was NEC, not NEMA.

60Hz would be assumed unless stated elsewise, ie: 50 Hz and 400 Hz stuff.
i see that note, but thats "voltage nominal rating", for designating its voltage class, which is a rating of ckt or device/system, with ANSI spec 60Hz tied to it.

but fair enough, nec is rooted in rms/DC/AC 60Hz, unless otherwise noted.
 
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