Charging at home questions from Volt to Tesla

[jimtelsa]

So I have a 220 Chevy Volt setup that I have been charging my Tesla with the j1772 adapter.

I get 8 to 9 miles per hour.

I have a friend who gets 15 miles per hour using the Tesla charger that comes with the car.

If I change the outlet and use my Tesla Charger would I get the same rate?

Only difference in Tesla's is he has the dual chargers

Thanks

 

[ItsNotAboutTheMoney]

There are three things that limit charging:
- your car: 40A
- electric circuit - max is 80%of the circuit rating. You need 50A circuit for 40A charging.
- the EVSE/charger: Tesla's UMC supports 40A.

 

[mblakele]

I'm not sure I understand either setup. It sounds like your friend is using the Tesla mobile connector, but with what adapter and what's his circuit rated for? And you're using the J1772 adapter on your circuit? How many amps is that circuit rated for?

I'd guess that the difference is the available current. The numbers make sense if your circuit is 15A, and your friend's circuit is 30A or a little less. If that's the case you'd need some electrical work before you can do any better: pull thicker wire and maybe some panel work. Get an electrician to take a look.

 

[jimtelsa]

I have a 20 amp setup

not sure what my friends is

i use the volt charger with the tesla adapter

he uses the tesla charger

thought i could change the outlet but it looks like I need more amps

 

[Jeff N]

I have a 20 amp setup

not sure what my friends is

i use the volt charger with the tesla adapter

he uses the tesla charger

thought i could change the outlet but it looks like I need more amps

Your existing EVSE probably looks similar to this:

That unit is limited to 15A but it was available for about $500 back at a time when other 240V EVSE units cost over $1,000.

 

[CLLACAB]

Hi Jim

I have both. My Level 2 gives me about 10 miles of range to my Volt and 20 to the Tesla, per hour. My Nema 14-50 gives me 29 mph.

 

[jerry33]

Note that you would also have to change the wiring to accommodate the higher amps.