Three Phase GFCI

[wireday]

It seems the changes for commercial/industrial 210.8 B calls for single phase and three phase GFCI.
Is this in any location? or just where required as always, sinks, garages, crawl space , outdoors etc.

 

[hbiss]

I asked about this in another thread but got no reply. I believe everything up to 50A single phase and 100A three phase has to be GFCI. I think one would have a hard time finding a 100A three phase GFCI breaker.

-Hal

 

[ActionDave]

It seems the changes for commercial/industrial 210.8 B calls for single phase and three phase GFCI.
Is this in any location? or just where required as always, sinks, garages, crawl space , outdoors etc.

Just where required, basically there's a list that includes places you have listed.

 

[hbiss]

This is new for the 2017 code right? What about the 50A/single phase and 100A/3 phase requirement? I originally was referencing a commercial kitchen.

-Hal

 

[ActionDave]

This is new for the 2017 code right? What about the 50A/single phase and 100A/3 phase requirement? I originally was referencing a commercial kitchen.

-Hal

Yes it's new, yes it's required in other than dwelling units.

 

[Dennis Alwon]

The 2017 has expanded the gfci protection in the same areas as before but include all 125/250v ....

(B) Other Than Dwelling Units. All single-phase receptacles
rated 150 volts to ground or less, 50 amperes or less and three phase
receptacles rated 150 volts to ground or less,
100 amperes or less installed in the following locations shall
have ground-fault circuit-interrupter protection for personnel.
(1) Bathrooms
(2) Kitchens
(3) Rooftops
Exception: Receptacles on rooftops shall not be required to be readily
accessible other than from the rooftop.
(4) Outdoors
Exception No. 1 to (3) and (4): Receptacles that are not readily accessible
and are supplied by a branch circuit dedicated to electric snowmelting,
deicing, or pipeline and vessel heating equipment shall be
permitted to be installed in accordance with 426.28 or 427.22, as
applicable.
Exception No. 2 to (4): In industrial establishments only, where the
conditions of maintenance and supervision ensure that only qualified
personnel are involved, an assured equipment grounding conductor
program as specified in 590.6(B)(3) shall be permitted for only those
receptacle outlets used to supply equipment that would create a greater
hazard if power is interrupted or having a design that is not compatible
with GFCI protection.
(5) Sinks — where receptacles are installed within 1.8 m
(6 ft) from the top inside edge of the bowl of the sink
Exception No. 1 to (5): In industrial laboratories, receptacles used to
supply equipment where removal of power would introduce a greater
hazard shall be permitted to be installed without GFCI protection.
Exception No. 2 to (5): For receptacles located in patient bed locations
of general care (Category 2) or critical care (Category 1) spaces of health
care facilities other than those covered under 210.8(B)(1), GFCI protection
shall not be required.
(6) Indoor wet locations
(7) Locker rooms with associated showering facilities
(8) Garages, service bays, and similar areas other than vehicle
exhibition halls and showrooms
(9) Crawl spaces — at or below grade level
(10) Unfinished portions or areas of the basement not intended
as habitable rooms

 

[hbiss]

Thanks, that's what I understood. Problem is where would one find a 100A 3 phase GFCI breaker? :?

-Hal

 

[ActionDave]

Thanks, that's what I understood. Problem is where would one find a 100A 3 phase GFCI breaker? :?

-Hal

How often does one install a hundred amp three phase receptacle?

 

[hbiss]

Plenty of commercial bakery ovens are that and much more, however I would hard wire them. So the question is what is the definition of a "receptacle". (I think we had a similar discussion a little while ago.) More to the point, what difference does it make how it's connected since the GFCI is supposed to protect personnel using the equipment.

-Hal

 

[kwired]

More to the point, what difference does it make how it's connected since the GFCI is supposed to protect personnel using the equipment.

-Hal

And at one time the problem of missing EGC pins on cord caps for NEMA 5-15 and 5-20 configurations used to be all that seemed to be of much concern, hard wire the item instead of cord and plug connect it and there wasn't near as much concern of losing the EGC. Apparently there is more concern with missing EGC on other receptacle types now, though I typically still only see it on 5-15 and 5-20.