Common 400A panel is now illegal?

A

Alexis

Member
Location
Los Angeles
Hey Everyone!

I'm installing a 400A overhead main panel and having trouble with local utility (LADWP) for my panel choice.

The panel that we are using is Square D SU2040D400PCN.
Here is the list DWP provided: https://www.ladwp.com/sites/default/files/documents/2022_ESR_Manual_Page_2_22i.pdf
similar one shows as UG type, but below in the list is the kit for overhead use for this panel that we are using. Part number: OSK400.

This gutter kit is listed there specifically for overhead connection.

They are telling me that this panel is UG type, not listed there and if we install it, they will shut us down. They don't like that conversion gutter to go from UG to OH..

Looking at this list it list it looks like it is very outdated containing Murray and other older panels.

My question is in this list a lot of panels listed with 2 200A main breakers in the same compartment, isn't it now illegal? I've had inspectors tell me not to get those to avoid a costly correction.. if this type is not legal anymore then most of those in the list are not as well..

I'd apreciate any feedback, maybe someone had experience with DWP about this..

Thank you!
 
What LADPW allows and what's "legal" or code-compliant are two different things. In general, utilities get to call the shots about what they'll connect to - for instance, if they don't list any Eaton panels, it can be a tough sell to get one allowed. Sure can seem arbitrary, but IME it's usually easier to stick with the PoCo's list exactly.
 
With the POCO's here their requirements / jurisdiction typically ends at the meter (or CT can), so often its better to use just a plain meter and keep the service disconnect separate. YMMV
 
Most of the panels on their list are underground only without the side wireway. Seems really stupid they will accept the kit on old models underground only models but not on the new models.

I think you need to connect to someone at the utility that understands their list is very out of date and most of the equipment has not been permitted by the NEC since 2020. The manufacture are slowly catching up with the NEC change and introducing new equipment so the utility needs to update their list.
 
Can’t say I’m surprised.
The western part of the USA requires a service equipment certification the rest of us ignore (USERC). Missouri utilities require a main bypass switch - horn bypasses are not sufficient.
The point is that services must meet both utility and local code standards. The NEC is only a starting point. It’s your duty to know ALL codes.
 
What part of LA?

I fear they are wrong. So long as there are locking provisions you are allowed to use that pull section kit.

Draw up a simple "plan" with that kit to show them. Make sure the electrical plans onsite match and do not say anything about underground. Words confuse them. Show the wire sizes, the conduit size, etc. through the weatherhead. Make sure you have the previous email or notes from the meter spot meeting. They usually tell you what is or is not allowed during that.

Also, make sure your meter spot wasn't marked for UG before the project started. They get to decide if you are fed underground or overhead. They might be saying that the location requires a UG feed and you are stuck with that.

Don't be afraid to email up the food chain if you think you are getting treated unfairly.
 
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