Would it be acceptable?

[oldsparky52]

Would it be acceptable to feed a load center with 120-volts only, and make one of the buses a neutral so that a 2-pole breaker would pick up a hot and a neutral, and the neutral would have OCP (and cut off the hot if it tripped)?

 

[Little Bill]

Would it be acceptable to feed a load center with 120-volts only, and make one of the buses a neutral so that a 2-pole breaker would pick up a hot and a neutral, and the neutral would have OCP (and cut off the hot if it tripped)?

I've seen panels fed with 120V only but they didn't use the other bus as the neutral, they used the neutral bar/bus. I've seen them back fed with a 2-pole breaker, dual lug on one side to feed the other bus, and some just don't use the other leg/bus.

Not sure why you want to put the neutral on the hot bus. I also don't see how a neutral fault would trip the OCPD because any fault would involve the hot.

Probably wouldn't make someone down the road happy to hook up a 240V circuit to what they thought was a 240V panel only to find out the other bus was only a neutral.

 

[oldsparky52]

Not sure why you want to put the neutral on the hot bus. I also don't see how a neutral fault would trip the OCPD because any fault would involve the hot.

The reason is we would like to put 30ma ground fault protection on some fuel dispensers and they required the circuit to be a switched neutral. I don't believe the GFPE breaker breaks the neutral, so a small MLO panel and some 2-pole GFPE breakers and we satisfy both requirements, the GFPE and the switched neutral.

Probably wouldn't make someone down the road happy to hook up a 240V circuit to what they thought was a 240V panel only to find out the other bus was only a neutral.

This would be a dedicated panel and labeled as such. If they can't read and follow directions, too bad. :lol:

 

[Sierrasparky]

The reason is we would like to put 30ma ground fault protection on some fuel dispensers and they required the circuit to be a switched neutral. I don't believe the GFPE breaker breaks the neutral, so a small MLO panel and some 2-pole GFPE breakers and we satisfy both requirements, the GFPE and the switched neutral. This would be a dedicated panel and labeled as such. If they can't read and follow directions, too bad. :lol:

The GFPE even if the neutral broke during a fault would satisfy the switched neutral requirement of fuel dispensers.
If you want GFPE you could add the GFPE downstream.

 

[oldsparky52]

The GFPE even if the neutral broke during a fault would satisfy the switched neutral requirement of fuel dispensers.
If you want GFPE you could add the GFPE downstream.

Did you mean to say what you wrote? It looks like you might have wanted to say "The GFPE even if the neutral broke during a fault would NOT satisfy the switched neutral requirement of fuel dispensers". If that what you wanted to say, I'd like to understand your reasoning.

I also would like to understand how you would install GFPE "downstream". What means/methods were you thinking?

Thanks,