100a

My main breaker is 100A. I understand my electrician can do load calculations for a charger, I'm thinking of getting the Model 3 Standard Range Plus so I would only need the 40A breaker. My main panel is an older 100A breaker, but assuming 40A will be too much load with the rest of my breakers...

Rather than spending the $3,000+ to do the 200A panel upgrade, I think as an interim solution, we're going to put a new plug in the garage on the currently unused 30-amp dryer circuit (we have a gas dryer) and utilize the mobile charger with the 10-30 adapter. I plan on doing off-peak charging...