320 amp all-in-one panel

[South Park Electric]

The 320 amp all-in-one meter sockets with 2-200 amp distribution breakers that we have used for years are no longer legal. I install one a while back and it was rejected, because it does not have a main breaker. Per the 2020 code all panels require a main breaker. Has anyone found an all-in-one unit that that meats code?

 

[ptonsparky]

That's a bite. We typically would not be using a meter/cb combination like that as service equipment. IDK if 230.85(3) would help or not.

 

[electrofelon]

That was yet another horrible code change that was not based on any history of problems. The person who submitted that code change said MLO panels are "no longer relevant". I suspect that person did not have much field experience. Anyway, I hope the code and the manufacturer's can come up with a requirement and equipment that can meet a separate compartment requirement. IIRC the wording for metering equipment is a bit more loose allowing "separate compartments" but for other equipment it is "separate enclosures".