EV charger on old apartment main panel

[scale]

I am looking to install an EV charger (either NEMA 14-30 or 14-50) at my apartment. It has a 200A main panel and I have a 70A breaker for the subpanel in my unit.

My original plan was to upsize the 70A main breaker to 125A, add a new 125A subpanel right next to the main panel, and pull my original subpanel circuit and new EV circuit from the new subpanel. However, on closer look, a label on the main panel shows the max branch circuit ampacity is 70A.

So my question is... how can I get a 240V EV charger installed while still being in code compliance?

I thought about dropping my apartment's breaker to a 40A and installing a NEMA 14-30, for a total of 70A for the main breaker. My apartment is very efficient so I think 40A would do, though I do have an electric range and AC, so there's a chance it would trip from time to time. Not sure how else I can go about this. I have to have it permitted to be eligible for a rebate from my utility.

Thoughts??

 

[Jraef]

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