Buzzing sound coming from my breaker on the panel.

R P · Mar 30, 2024

electriceddy said: ↑

Now we are getting into equipment specifications.
It really won't matter which calls for charging initialization, either the car will request the control circuit to engage the charging relay(s) in the EVSE, or the WIFI command. The power will have to left on the EVSE for the WIFI circuitry to operate, same if the car is programmed to initiate the charging sequence. So there will always be a slight drain to operate the electronics in the WIFI (or not) EVSE. Additionally, the car will have to be tethered in order to communicate (plugged in).
Some power companies poll the equipment thus gaining their required information that way, so WIFI may have an advantage there. BC Hydro (TOU plan) will not work that way, they have separate communication with their meters.
I rarely use my EVSE at home, the breaker is almost always off, so no phantom drain.
Click to expand...

Yes, that is why I was turning off my breaker. But I usually charge every few days, so decided to leave it on now. I could look up the specs, but I assume the EVSE idle time drain is very low.

Re, the BC Hydro TOU plan, how will that work? Will it just charge a lower rate at certain times? I assume it will not be able to communicate with my Grizzle, or my car. Their meters are supposed to be smart. Will they be able to tell if an EV is charging?

electriceddy · Mar 30, 2024

R P said: ↑

Yes, that is why I was turning off my breaker. But I usually charge every few days, so decided to leave it on now. I could look up the specs, but I assume the EVSE idle time drain is very low.

Re, the BC Hydro TOU plan, how will that work? Will it just charge a lower rate at certain times? I assume it will not be able to communicate with my Grizzle, or my car. Their meters are supposed to be smart. Will they be able to tell if an EV is charging?
Click to expand...

They will measure the current draw using their "smart" meter, although it would be a given that an EVSE is drawing power charging an EV considering the consumption and duration.
Picture of my setup:

One thing I didn't mention is a good idea to have whole home power surge protection (pictured below my EVSE side of panel). In this area the power does surge/brownout at periodically and is an effective way to provide protection for all electronics (including the car if charging during an occurrence). Install it as close to the main breaker as the panel bus will allow.
When I use the EVSE, I simply run the cord out of my old meter base location which I made an insulated hinged door covering a 4" hole (seen here and also first picture below the panel) to the right above a 20A outlet which I also installed (just in case)

R P · Mar 30, 2024

Yes, that's a pretty nice setup. Easy for you, being an electrician, but would cost me a lot, am sure.

Cruiser · Apr 1, 2024

Impressive arrangement, but i think it is very costly

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Buzzing sound coming from my breaker on the panel.

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