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Well, to nit pick, EVSE are a logic board and a big relay to supply wall power to the car. The relay is closed or open.
It cannot control the power going through it. It sends a pilot signal the the car's onboard charger telling it to only draw X amount of power.
This is 3.3kW for the Spark EV.

For example: I have a kit built JuiceBox that I used for my Volt (3.3kW). The JB has a pot in there for adjusting the pilot signal to the car. I never touched it because all I had was the Volt and the wiring I used was adequate for 15A @ 240V.
I got a 4 day test drive in a BMW i3 which charges at 6.6kW. So before plugging in the i3 I had a clamp-on ammeter on the input side of the L2 and a small screw driver ready to adjust the pilot signal pot.
When I plugged the car in I saw a big number and immediately fumbled to turn down the pot screw. I brought it down to 13.75 A which is what the Volt would draw. 240V x 13.75A = 3300 watts.
If I hadn't set the pilot signal,, bad things to my house wiring might have happened before the circuit breaker popped.

<blockquote data-quote="NORTON" data-source="post: 14029" data-attributes="member: 626">Well, to nit pick, EVSE are a logic board and a big relay to supply wall power to the car. The relay is closed or open.It cannot control the power going through it. It sends a pilot signal the the car&#039;s onboard charger telling it to only draw X amount of power. This is 3.3kW for the Spark EV. For example: I have a kit built JuiceBox that I used for my Volt (3.3kW). The JB has a pot in there for adjusting the pilot signal to the car. I never touched it because all I had was the Volt and the wiring I used was adequate for 15A @ 240V.I got a 4 day test drive in a BMW i3 which charges at 6.6kW. So before plugging in the i3 I had a clamp-on ammeter on the input side of the L2 and a small screw driver ready to adjust the pilot signal pot.When I plugged the car in I saw a big number and immediately fumbled to turn down the pot screw. I brought it down to 13.75 A which is what the Volt would draw. 240V x 13.75A = 3300 watts.If I hadn&#039;t set the pilot signal,, bad things to my house wiring might have happened before the circuit breaker popped.</blockquote>

[QUOTE="NORTON, post: 14029, member: 626"] Well, to nit pick, EVSE are a logic board and a big relay to supply wall power to the car. The relay is closed or open. It cannot control the power going through it. It sends a pilot signal the the car's onboard charger telling it to only draw X amount of power. This is 3.3kW for the Spark EV. For example: I have a kit built JuiceBox that I used for my Volt (3.3kW). The JB has a pot in there for adjusting the pilot signal to the car. I never touched it because all I had was the Volt and the wiring I used was adequate for 15A @ 240V. I got a 4 day test drive in a BMW i3 which charges at 6.6kW. So before plugging in the i3 I had a clamp-on ammeter on the input side of the L2 and a small screw driver ready to adjust the pilot signal pot. When I plugged the car in I saw a [i]big[/i] number and immediately fumbled to turn down the pot screw. I brought it down to 13.75 A which is what the Volt would draw. 240V x 13.75A = 3300 watts. If I hadn't set the pilot signal,, bad things to my house wiring might have happened before the circuit breaker popped. [/QUOTE]

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