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Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Posted: Sun Jul 16, 2017 4:54 pm
by maini
Yes the existing J1772 and the cables can do 20A. I think EVSE upgrade might be changing the internals. the circuit inside as you noticed is heavily potted so I doubt anything can be changed. Not sure why EVSE upgrade is not setting theirs at 20A and keeping it at only 16A. Technically speaking 1 resistor in the pilot signal wire might have to be changed to provide 20A but finding that will be good amount of work. I am pretty sure the relays can easily handle 20A.

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Posted: Sun Jul 16, 2017 6:18 pm
by jjeff
The older Leaf EVSEs can be upgraded to 20a as they have 12 gauge wire, the newer ones cheaped out and went with 14 gauge, hence the 16a max of the newer upgrades. It could be worse, the Volt(and maybe Bolt??) really cheaped out and use 16 gauge, limiting it to 12a max :x

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Posted: Sun Jul 16, 2017 8:37 pm
by maini
Very sure my 2014 came with 12AWG wire. So 20Amp should be no problem.

Re: Cheap L2 EVSE by converting the 2013-14 Nissan L1 EVSE - $25

Posted: Mon Jul 17, 2017 3:17 pm
by jjeff
maini wrote:Very sure my 2014 came with 12AWG wire. So 20Amp should be no problem.

Yes I believe the '11-14 OEM Leaf EVSEs can be upgraded to 20a by EVup.., I think the 14 gauge wiring started in '15.
At one point the upgrades could be either 16 or 20 amps, order one with a L6-20 end and it would max out at 16a, order one with a L6-30 plug and it would go to 20a max.
Note they all max out at 12a @ 120v unless you purchase a separate 120v adapter, in this case it maxes out at 16a, not 20a like on 240v.