TimLee
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Leaf Number: 2026
Location: Chattanooga, TN

Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 1:35 pm

DaveinOlyWA wrote:clarify??
Clarification on whether all 2013 forward upgrades go to 24 amps, or not.
If not, why yours and Tony do.

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

fooljoe
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 1:41 pm

TimLee wrote:
DaveinOlyWA wrote:clarify??
Clarification on whether all 2013 forward upgrades go to 24 amps, or not.
If not, why yours and Tony do.
All U.S. upgrades are set to a max 20 amps by default, but you can request an unlock code from Phil to set it up to 25.
RavCharge.com | 2012 Rav4-EV | 2011 Leaf SL w/QC batt replaced 11/20/15 | Clipper Creek CS-60 | EVSEupgraded 2013 Leaf EVSE | 3.84kw PV

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RegGuheert
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 1:59 pm

fooljoe wrote:
TimLee wrote:
DaveinOlyWA wrote:clarify??
Clarification on whether all 2013 forward upgrades go to 24 amps, or not.
If not, why yours and Tony do.
All U.S. upgrades are set to a max 20 amps by default, but you can request an unlock code from Phil to set it up to 25.
I don't get why it would be 25. With 10AWG wires, 80% of 30A gives you 24A, not 25A.

And I wonder if there is some 12AWG wire in there somewhere that dictates the 20A limit. Perhaps the wires to the plug or the wires to the J1772 connector?
RegGuheert
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EVDRIVER
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 2:13 pm

You can't do 25A in the USA on an L6-30 only 24A, in Europe some breakers are rated to the max of the breaker and they change the plug ends of course since they don't use an L6-30.

fooljoe
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 2:26 pm

RegGuheert wrote:And I wonder if there is some 12AWG wire in there somewhere that dictates the 20A limit. Perhaps the wires to the plug or the wires to the J1772 connector?
The J1772 connector is rated to 20A and the J1772 cable uses 12AWG, hence the 20A limit - going over that is a "do at your own risk" kind of thing, hence the "by special request" nature of it. In my case, I had to go over 20A for my Rav4-EV's charging timer to function at all, because the Rav doesn't check the line voltage and just assumes that any EVSE with a pilot signal <=20A is a L1 EVSE.
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johnrhansen
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 4:50 pm

You can put way more than 20a through a 12 gauge wire as long as the insulation and connectors are rated for a high enough temperature. In residences it's true though, but not necessarily internal to
listed appliances.
2013 S model with quick charge package.
AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

mctom987
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 5:11 pm

fooljoe wrote:
RegGuheert wrote:And I wonder if there is some 12AWG wire in there somewhere that dictates the 20A limit. Perhaps the wires to the plug or the wires to the J1772 connector?
The J1772 connector is rated to 20A and the J1772 cable uses 12AWG, hence the 20A limit - going over that is a "do at your own risk" kind of thing, hence the "by special request" nature of it.
NEC says #12 can carry 25A. However, in most cases it's limited to 20A. At 90°, it's capable of 30A. Most wires aren't rated for this temp, and usually are limited to 60°.

There are other components in the EVSE as well. Perhaps the contactors/relays are not rated for switching 25A, or doing so may drastically reduce their lifespan.
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johnrhansen
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 5:52 pm

A good example would be to look inside the wiring of a electric range. The house has 6 gauge wire to the receptacle, and inside the range itself, the wire is way smaller. That's because inside an appliance, the nec used for construction does not necessarily apply. The design of an appliance in its specific configuration is listed on its own.
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AV 30 amp level 2 EVSE, Bosch PowerMax 30 Amp EVSE, EVSE upgraded EVSE.

DaveinOlyWA
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 6:03 pm

to be honest with you, 25 amps is what I remember but it could be 24. I set mine to 24 only because I plugged it in and let it charge for 5 minutes to see if anything out of the ordinary would happen.

I have also read that people have experienced a "reset" of the current setting from various possible causes including unplugging it, etc. I also tried that and could not get that to occur either...
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 7059.6 mi, 95.35% SOH
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Eire32
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Re: Nissan Leaf EVSE upgrade - Reviews? Reliable?

Tue Aug 26, 2014 7:01 pm

Sent mine off today to CA for the upgrade, $340 approx, should be back by next Wednesday!

In the meantime getting the 240 volt dedicated line put in. The sub-meter will allow a dedicated EV line to my garage for 5c per KWH off peak hours i.e. past 10pm…...

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