Using 120/240V rated C.B on 208Y/120V power systems.

[282021]

According to NEC 240-85, could a three-pole, 120/240V circuit breaker be used as main protection in a three phase 208Y/120 volts power system?

 

[bennie]

Re: Using 120/240V rated C.B on 208Y/120V power systems.

You won't find a 208/120 volt rated breaker. The 240/120 is all there is.

 

[frenchelectrican]

Re: Using 120/240V rated C.B on 208Y/120V power systems.

i use the 120/240 breaker very well on 120/208y breaker system very well for many years as long the second slash say 240 or less it can use 208 just fine it will say it clear in nec about multi voltage but idont rember where it say it but i know it is there

merci marc