Quote:
Originally Posted by oil pan 4
Circuits are not intended to run continuously at more than 80% of rated amps. For a 40 amp circuit this is 32 amps.
Will the charger regularly draw 32 amps or more?
You also have to derate the wire for the higher temperature found in up near the roof.
So now what you thought was a 40 amp circuit becomes more like 30 amps or less.
This is important because fixed wiring causes about 70% of fires in residential structures.
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An EVSE is not much more than a junction box with a disconnect in it and a pigtail or cord reel that plugs into the EV. The actual charging system is built into the vehicle. As such, it is useless to spend big bucks on a super duty EVSE if your vehicle will never draw full rated power.
I remember hearing that the early Leafs have a smallish charging system. They were upgraded in 2013 or 2014. I don't remember the exact figures, but I believe the older models only charge at 15 or 20 amps. I'm not sure if the high-cap charging is standard on the new models, but it is 30 amp.