Article 450-14

[Red Wiggler]

I think I know the answer to this but....

Can a "lockable" Circuit breaker be used in lieu of the disconnect switch (mounted in a remote location) as described in Article 450.14 2011 Version of the NEC?

It seems like I am splitting hairs here...

The situation I have is that I am stepping up 480 volts to 4160... and back down from 4160 to 480 further down the line. (Voltage drop issue)

Any ideas?

 

[david luchini]

There is no "in lieu of" in your case, as 450.14 doesn't require a "disconnect switch," but a "disconnecting means." A circuit breaker is certainly a disconnecting means, so if you can lock the c/b open, you would comply with 450.14.