wrobotronic
Senior Member
- Location
- Colorado
Hi,
I have a commercial service to look at today. From the utility transformer the feed is two Al 500s for 480/277 vac, 600A service. There is no main disco. I am being told, however, that there are not more than six breakers (two 100a and three 200a) in the distribution cab and a main is not required. While this seems to be following the code, something just doesn't seem right. The cabinet appears to be engineered to only accept the five breakers that are in there now. Question is do I need to require the EC to provide documentation that the cab will only accept five breakers and thus comply with the six handle rule? Or am I missing something and a main disco is in fact required. I can't seem to find anything in 230 that requires a main, (I may be missing something however) even though it's a pretty sizable service. Thank you.
I have a commercial service to look at today. From the utility transformer the feed is two Al 500s for 480/277 vac, 600A service. There is no main disco. I am being told, however, that there are not more than six breakers (two 100a and three 200a) in the distribution cab and a main is not required. While this seems to be following the code, something just doesn't seem right. The cabinet appears to be engineered to only accept the five breakers that are in there now. Question is do I need to require the EC to provide documentation that the cab will only accept five breakers and thus comply with the six handle rule? Or am I missing something and a main disco is in fact required. I can't seem to find anything in 230 that requires a main, (I may be missing something however) even though it's a pretty sizable service. Thank you.