Lawrence,

Even though the (cold-exposed) breaker might not trip, please remember the 
purpose of the breaker is to protect the *wire* after the breaker from 
overload. If that wire run through insulated walls, it might overheat and get 
damaged, even though the breaker does not trip, so please refrain from 
overloading a breaker just because you can.
I remember reading the report from a fire inspector who was called to a home 
that was remodeled and existing walls were insulated and new sheetrock 
installed and painted in winter and so in order to let it dry properly they 
used two small electric space heaters to warm up the remodeled room, but the 
breaker kept popping so they replaced the 15A breaker with a 20A one without 
checking wire gauge. The next night the room caught on fire because the 
undersized wiring in the newly insulated wall was overheating from the 
combination of the increased breaker rating allowing more current than the wire 
size was rated for and the new insulation preventing the hot spot to get 
adequate air flow cooling...
If you can, please check with LeafSpy how much the car is actually drawing from 
the 240V EVSE and make sure to either modify the EVSE or the service to keep 
the continuous draw at 80% of the rating of the circuit.

Good luck,

Cor van de Water 
Chief Scientist 
Proxim Wireless 
  
office +1 408 383 7626                    Skype: cor_van_de_water 
XoIP   +31 87 784 1130                    private: cvandewater.info 

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-----Original Message-----
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lawrence Rhodes via EV
Sent: Sunday, December 25, 2016 11:43 AM
To: ev@lists.evdl.org; ev-requ...@lists.evdl.org
Subject: Re: [EVDL] J1772 might not go to a low level but just trip breaker.

I have been charging the 30kw Leaf for hours now and still not tripped the 
breaker here in Modesto.  However the temperature is near freezing. I'll check 
again soon and report back.  Temperature does make a difference.  A frozen 20 
amp service will suffice for a while for a 30 amp EVSE.  Lawrence Rhodes
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