I am reviewing plans for a residential car charging station. 240v and the charger has the ability to charge at multiple output ratings from 16 amps up to 60 amps, the amperage can either be set within the charger or it can be changed with an app on your phone. The manufacturer makes mention in their spec sheet that the OCPD need to be a double pole breaker rated at 125% of the load, simple math tells me that the OCPD would need to be a minimum of 65 amp rated breaker since they do not make a 62.5 amp breaker. Am I missing something here?
Thanks.
Yes!
You are right.
There are two popular models on the market. The regular small charger that you can plug into a regular 120 volt outlet --but will take the whole night --around eight to twelve hours to achieve a full charge from an almost depleted EV.
The fast charging model will take around four hours for a full charge. The OCPD required for this model is 40 Amps. The load (nameplate) is rated 32 Amps.
So, considering continuous load 32 x 1.25 = 40.
There is no higher rated yet on the market.. . .not even the Tesla X Sports Model as far as I know.
Most chargers are adjustable e.g. from low charge to high charge.. . . usually in three increments
I am installing one right now. . . and its a high charge model that requires a 40 A OCPD.
All high charge models require a minimum 40 Amps, 2 Pole 240 volts.
As you stated a smaller OCPD can be installed with appropriately sized conductors.
I am doing this for a friend
Pro Bono.
This is the second one I’m installing for another friend.
The downside for being a sparky.
Can’t say no.