Service Main

[Lyle2232]

I had occasion to open up a service main on a commercial installation. Polyphase service. The electrican had wired the the breaker line on bottom and load on top lugs. Could not recall code article. Looked in 230, 408, 225. Nothing I could not find anything. Little help here please...Also the 3R cabinet didn't have "service Entrance rated" anywhere on it.
Thanks in Advance. Lyle

 

[Dennis Alwon]

If the breaker is labeled line and load then the conductor must comply with that orientation otherwise it would not matter. As far as the lack of service rating I would look harder as most panels I have seen are rated as suitable for service equipment (SUSE)

 

[kwired]

If the breaker is labeled line and load then the conductor must comply with that orientation otherwise it would not matter. As far as the lack of service rating I would look harder as most panels I have seen are rated as suitable for service equipment (SUSE)

I agree with both comments.

If it has a factory bonding screw/jumper, it very likely is rated as suitable for use as service equipment.

If the neutral is permanently bolted to the cabinet it may be rated only for use as service equipment.