Couldn't Charge From Siemens EVSE

[B5Bob]

My dad has a Siemens E348556, 30A wall mounted EVSE, with a J-1772 connector. He uses it to successfully charge his Nissan Leaf daily. I brought my M3 over for the first time and tried to charge using the Tesla provided adapter. I've used the adapter successfully elsewhere, but it didn't work. The Tesla was reporting it was trying to pull 30A ... it should have been 24A if the EVSE was reporting itself correctly, right? The car would ramp up charging and the EVSE would fail after it got over 24A and try again.

I wasn't able to test lowering the amperage draw because it was late and I just plugged in the mobile connector instead. But wondering if anyone else has experienced this with a Siemens unit or the J1772 adapter.

 

[Rice&Curry]

Did you reduce/set the current to 24 amps in your tesla dash and check if the charger was able to charge ?

 

[B5Bob]

Did you reduce/set the current to 24 amps in your tesla dash and check if the charger was able to charge ?

I switched the mobile connector before a thorough test. But I'm curious which parry (car or EVSE) is responsible for doing the 80% calculation (i.e. a 30A circuit can only provide 24A continuous), and why it didn't happen correctly in this case.

 

[RandyS]

Siemens EVSEs have had some compatibility problems in the past with Model 3 cars...

Siemens versicharge not charging model 3

New to the Tesla family. We have a Siemens US2:VC30GRYU VersiCharge Universal (VC30GRYU). That is charging our BMW I3 for years no issue, received my Tesla M3 yesterday and it is not working, the SIEMENS charger has the solid green light on, indicating ready to charge. The Tesla car also states...

teslamotorsclub.com

 

[B5Bob]

Siemens EVSEs have had some compatibility problems in the past with Model 3 cars...

Siemens versicharge not charging model 3

New to the Tesla family. We have a Siemens US2:VC30GRYU VersiCharge Universal (VC30GRYU). That is charging our BMW I3 for years no issue, received my Tesla M3 yesterday and it is not working, the SIEMENS charger has the solid green light on, indicating ready to charge. The Tesla car also states...

teslamotorsclub.com

Thanks. I figured it would have come up before if it wasn't user error.