hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Does anyone here know of 2 pole, 3 wire receptacle with GFCI , 120V? I have RTU and its receptacle is spec like this
NEC receptacle
- Thread starter hhsting
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
Yes, gfci receptacles break both the neutral and hot, hence two pole. On a side note, it’s easier on troubleshooting, as if the dead circuit has no continuity to the equipment ground, nine out of ten times it’s a tripped receptacle somewhere.
That seems like a weird way to have it spec'd. Is that from the factory or designer? Although I agree with hillbilly1's statement, i don't like the term 2-pole for a 120v circuit. and 3-wire... if they are talking about Black White Green(bare) okay.. but that is like a homedepot phrase IMO.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
From the link that I posted it clearly states 2 pole, 3 wire.
It sure does... hmm.. I don't like it. hahaha.
- Location
- Illinois
- Occupation
- retired electrician
The Hubbell version of the NEMA plug and receptacle chart shows them like that. A 2 wire device is 2 pole, 2 wire device and one with an EGC is 2 pole, 3 wire on their chart.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Ever look at plug/receptacle selection charts? They often classified that way.
Two pole three wire means two current carrying and one grounding conductor
Three pole four wire means three current carrying and one grounding conductor
Three pole three wire, non grounding would be like the old three wire range and dryer receptacles.
Malywr
Senior Member
- Location
- New Jersey USA
OP set 2pole and ask if that is 120v
If that is 2 pole (208-250v)regular receptacle 120v is no good and needs GFCI disconnect or GFCI breaker
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
OP needs to clarify. Kind of indicates it says 2 pole 3 wire, 120 volt. But then adds the question mark and we not really sure if he is quoting or asking.
2 pole 3 wire, 120 volt (proper should be 125 volt) would be 5-15, 5-20, L5-20...
2 pole 3 wire 250 volt would be 6-15, 6-20, L6-20...
OP doesn't state voltage other than 120 followed by a question mark.
Also would be very rare for a RTU to require a cord and plug connection adding even more questions or confusion here.
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
The receptacle is probably for servicing the RTU as required by code. As for two pole 120, remember code considers the neutral a “hot” wire once it leaves the service.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Could be, like I said some clarification is needed because what was described isn't all that typical assuming it means what it appears to say.
I agree with all of whats being said... but Infinity made the clearest point in his 1st post with the link. The link clearly states in the specifications that the GFCI receptacle is 2 pole, 3 wire. damn terminology hahaha
Malywr
Senior Member
- Location
- New Jersey USA
120V is not single pole ?
Single pole one ungrounded wire and neutral
2 pole. 2 ungrounded wired
3 pole 3 ungrounded wires
2 pole 120/250V. 2 ungrounded wires and neutral
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K8MHZ
Senior Member
- Occupation
- Electrician
2 pole = 2 contacts. I don't understand the confusion.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
There is no contact for the EGC?
K8MHZ
Senior Member
- Occupation
- Electrician
K8MHZ
Senior Member
- Occupation
- Electrician
Here is a diagram for a single pole GFCI.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Got it, you were only referencing a GFCI receptacle and referring to the contacts that open within the device when activated.
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