Here is my setup. I just shut off the circuit breaker and checked what's connected to the breaker.
Here are two things I found
1. Solar Water Heater Controller - Up to 9A
2. Sensor Light with two 60W bulb - About 1A
I think the suspect is the Water Heater Controller, if it draws max 9A, it would trip the circuit as Leaf 16A + 9A = 25A.
30A circuit breaker will only allow max current of 24A for continuous usage.
I also swap the 60W light bulb with the energy saving one just to draw less current.
Going to try it again tonight and hopefully removing the Solar Water Heater Controller will prevent the circuit from tripping.
PS. had just realize I only have 100A service panel, Think I'll have to upgrade it at some point when I'm getting second EV.
At that time maybe it's better to simply get the second meter for the EV charging plan from SCE.
Leviton Evr-Green Charger