New Option for L2 Charging on 100 amp service

DanJustDan · 2025-09-24T14:03:26-0400

hightech-guy said:
I agree your setup works in practice. In actuality, it is likely a code violation for failing most any load calculation - given your limited 100A service, A/C, oven, and dryer plus EV charging. Sounds like your electrician didn't perform this basic check.

You may be right but if two electricians and whoever did the permit inspection say it's okay, who am I to say otherwise.

Jupiter · 2025-09-24T16:46:53-0400

We are 150 amp, all electric house, and was still able to add a 50 amp circuit for EV charging. We did a load analysis (as specified in the NEC), and it was pretty straightforward. I later added an Emporia Vue 3 to monitor things and I’ve never even seen us get close to 100 amps…

IAmTheNorm · 2025-09-24T17:45:51-0400

DanJustDan said:
You may be right but if two electricians and whoever did the permit inspection say it's okay, who am I to say otherwise.

thank you!
it bothers me that people dont trust experts. (mainly re: science, medicine)
I'm a professional Engineer, i'm literally liable for my own work. and its a protected job title, you literally cant do my work.
so i expect people to trust me, and i will trust other experts.
the average layperson should not have to "do their own research" for specialized subjects.

Syngas · 2025-09-26T23:42:00-0400

Take a look at the Youtube Channel "State of Charge", It is focused on EV chargers and EVs, including the infamous NOX.
They have discussed this type of charger in some detail. They do work, they appear to be cost effective, and there are several options, depending on where you live. And when they cut back power, they do it by modulating the EVSE (charger). We have a chargepoint flex which can be set to charge our NOX at various reduced rates. I have ours dialed down from 48 to 20 amps, for example.

New Option for L2 Charging on 100 amp service

DanJustDan

Jupiter

IAmTheNorm

Syngas

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