EV chargers question

[hhsting]

I have Volta Gen4 L2 Station below:




However the drawings also indicate Ebox professional below:





I am being told that Ebox professional is in Volta enclosure and these are one charger. I was wondering if anyone came across the above two items. The cable size to them depend since Ebox says 50A while Volta calls for 48A. I failed to see how these are the one charger since they have different 50A and 48A input power. However to that I was told that Ebox can be "programmed" from 50A to 48A. I am skeptical and have the following questions:

1. Are the above two separate EV chargers or one can be in another? Typically

2. Can Ebox be programmed? Has anyone come across this? Typically

 

[don_resqcapt19]

...
I am being told that Ebox professional is in Volta enclosure and these are one charger. I was wondering if anyone came across the above two items. The cable size to them depend since Ebox says 50A while Volta calls for 48A. I failed to see how these are the one charger since they have different 50A and 48A input power. However to that I was told that Ebox can be "programmed" from 50A to 48A. I am skeptical and have the following questions:

1. Are the above two separate EV chargers or one can be in another? Typically

2. Can Ebox be programmed? Has anyone come across this? Typically

Not sure there is a good reason to even care about 2 amps.

 

[hhsting]

Not sure there is a good reason to even care about 2 amps.

Well 48x1.25= 60A
50x1.25 = 62.5A.

Phase cable provided is #4awg

So breaker size is 60A if 48A and breaker size is 70A if 50A

2 amps make difference

 

[ramsy]

Tell client to buy something else, or call back when OEM finishes programming for 48Amps, certified with new 48Amp listing to pass AHJ inspections.

 

[hhsting]

Tell client to buy something else, or call back when OEM finishes programming for 48Amps, certified with new 48Amp listing to pass AHJ inspections.

I don’t follow OEM finishes programming and certifies with new 48A? What is that and Is that doable at plans review stage can you futher clarify? Is it in NEC 2017?

 

[electrofelon]

Well 48x1.25= 60A
50x1.25 = 62.5A.

Phase cable provided is #4awg

So breaker size is 60A if 48A and breaker size is 70A if 50A

2 amps make difference

IF you have 4 AWG conductors, why not just put it on a 70 then and all bases would be covered?

 

[ramsy]

I don’t follow OEM finishes programming and certifies with new 48A? What is that and Is that doable at plans review stage can you futher clarify? Is it in NEC 2017?

Tesla's can control max charge from the vehicle (programming), set to 24A with 30A clothes-dryer outlets, but I don't believe that is acceptable at plan review.

Tesla Model 3 can accept 48A, up from 32A in prior models, and nothing prevents the next model from accepting 56A.

 

[WA_Sparky]

625.41 Overcurrent protection:
A continuous load is defined by a load that is expected to be running for 3 hours or more, correct?
The new level 3 EV chargers can charge in under 40 minutes. Do you think this could call for a code change to only apply to level 1 & 2 chargers?

 

[ramsy]

AHJ might accept proposal at plan review, if new level 3 EV charger was installed in a single family home with 1 or 2 car garage, and home owner was not offering the vehicle-charging service to the public.

 

[yuhong]

This is not uncommon, ChargePoint round up to 50A as well.

 

[augie47]

IF you have 4 AWG conductors, why not just put it on a 70 then and all bases would be covered?

Agree.