I'm going to install a 4 meter pack panel on a 4 plex apartment building. For the house meter the AHJ says I have to install a commercial panel next to the 4 pack and feed it off of the meter side. He said he won't accept a 5 packer. I'm not sure why.
The 4 meter pack panel is rated at 400 amps. How do I size the feeder from it to the house panel?
SCE founded it... with PG&E joining in next -- back in the 1945 era.
ALL of the western utilities are now EUSERC members: SCE PG&E SMUD SDG&E Roseville Electric APS
EUSERC is the controlling entity WRT all Service Equipment -- that's its ambit.
When you thumb through Sq D's catalog EUSERC conformance will be noted whenever it applies. So, western ECs simply cross off all of the equipment not so conforming -- it will be rejected out of hand.
That is why notions proffered by eastern electricians inre Services must be discarded -- since EUSERC standards will never be the low cost approach. We're not allowed to gin up clever solutions like the rest of the country.
Beyond that, there are many, many restrictions placed upon residential properties -- like requiring HOs to trench in heavy-ups -- the existing OH drop is not permitted to scale up. The local jurisdiction wants them all to move underground. These restrictions are ten-a-penny in zoning crazed California.
One example: a commercial job I built required a set of utility pull boxes -- joined by PVC -- stubbed to the property limits -- even though the existing power lines were in place -- above on poles.
The task was brutally difficult due to a personal war with SMUD initiated by my PM and hardpan so tough it defeated power equipment! ( Think concrete )