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Is there anyone that happens to have both a Duosida L2 charger and an IR temp gun that could check and see what temp their unit runs at after charging for... Oh 2-3 hours? I measured mine @ 112°. I also measured the breaker in the panel, which is about 75' from the garage, at 88° which was 10-12° hotter than the adjacent breakers. I just want to make sure I'm not over loading anything. My garage only has 12ga wiring running to it, with a 20A double pole breaker.

Thanks in advance!
 

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Sounds ok. 12awg and 20A breakers are normal. Wire is not perfect, there are always some losses, which contributes to heat. Code would allow 16A max on those breakers, gen 1 Volt won't pull more than 15A. Remember that the temps go up even more with higher ambient, which you didn't mention. Being in MN, maybe you don't have to worry so much about scorching hot garages in the summer?
 

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Does not sound like anything to be concerned about. I have two of these same EVSEs running at 240 and I’ve only ever touched them, and while they do get slightly warm to the touch, your temp does not seem out of bounds to me. The duosida has an over temp circuit so if it gets too hot it should shut down. How hot is your 240 outlet is the more important question. If that is very hot that could be a problem, but from the sound of it you should be ok. At 20 amps, your line rating and wiring gauge should be ok to pull 15. At 80% of 20 16 would be the max continuous but the Volt draws less than that at 15. The fact that the breaker is only 88 is good. The Oem evse seems about the same when I’ve used that.


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You gave me a good excuse to pull out my IR temp gun and do some measurements, since I had to charge my 2015 Volt with my Duosida L2 EVSE today.

After 2 hours of charge, the EVSE reached a temp of only 90 degrees F temp (in a 69 degree garage, since it is relatively cold here in NJ today).

I have a similar situation as you, since my breaker is 65 away from the garage in a subpanel in my basement. The breaker temperature was 88 degrees F in a 67 degree basement. For what it's worth, the circuit that supports the Duosida EVSE uses 10 gauge wire, even though it has a 20A breaker, outlet, and double pole switch. I chose to use 10 gauge in case I get another car and want to upgrade the breaker, outlet, and switch to a 30A circuit to support a 24A continuous EVSE. By the way, the Duosida unit is working very well for my Volt.

I hope this information helps.
 
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You gave me a good excuse to pull out my IR temp gun and do some measurements, since I had to charge my 2015 Volt with my Duosida L2 EVSE today.

After 2 hours of charge, the EVSE reached a temp of only 90 degrees F temp (in a 69 degree garage, since it is relatively cold here in NJ today).

I have a similar situation as you, since my breaker is 65 away from the garage in a subpanel in my basement. The breaker temperature was 88 degrees F in a 67 degree basement. For what it's worth, the circuit that supports the Duosida EVSE uses 10 gauge wire, even though it has a 20A breaker, outlet, and double pole switch. I chose to use 10 gauge in case I get another car and want to upgrade the breaker, outlet, and switch to a 30A circuit to support a 24A continuous EVSE. By the way, the Duosida unit is working very well for my Volt.

I hope this information helps.
Thanks for that! Your numbers are almost dead nuts to what mine were. My garage is a good bit warmer than yours, which explains the higher case temperature. My basement and breaker temps are exactly the same as yours.

Much appreciated! I can sleep easy now.
 
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