1PH/3PH RECEPTACLE

[mstrlucky74]

Ok, yes prob dumb question. So there is a 2 pole breaker feeding these receptacles. The receptacle type can either be a 1 phase or 3 phase. It would have to be a single phase receptacle I'm assuming. But how could a single phase receptacle be matched with a 2 pole breaker? Thanks.

 

[infinity]

Single Ø can be either 120 or 208 volts. Or 277 or 480 volts.

 

[kwired]

You only have one phase angle between two "phase conductors" so the connected load is "single phase". "Single phase" does not have to be "line to neutral".

 

[mstrlucky74]

Thank you!

 

[meternerd]

Thank you!

This may be a terminology problem. Single phase seems to refer to one line (hot) and one neutral. But...when a receptacle is set up for two hot lines, one neutral and one ground it's still often referred to as single phase. The voltage between the two hots may be 208, 240 or 480 depending on the transformer supply.

 

[iceworm]

... how could a single phase receptacle be matched with a 2 pole breaker?

Single phase receptacles fed by a 2pole CB can be four wire - like a dryer receptacle.
Or three wire like a nema 6-20R