Academiguy
Posts: 10
Joined: Fri Mar 12, 2021 6:33 pm
Delivery Date: 13 Mar 2021
Leaf Number: 311706

Re: First Impressions of '21 Leaf SV

Thu May 06, 2021 12:34 pm

jjeff wrote:
Tue May 04, 2021 8:18 am
A 30a breaker will get quite hot pulling 27.5a(what the Leaf EVSE generally pulls) after a short while. If the wiring is 10g which generally a 30a circuit has, it will also get warm but may be harder to feel that. All in all not a good idea to run the OEM Leaf on a 30a circuit, besides being against code.
In my case the 30a circuit that my Nissan EVSE is on comes from a subpanel in my detached garage. The subpanel itself is fed from the main panel in the house, with a 40a breaker on it. Hypothetically, could I pull the 30a breaker out of the subpanel and replace it with a 40a breaker? That would handle the 27-28 amps the EVSE draws without going over the 80% capacity (32a) of the breaker. Would that be a reasonable solution?
2021 Chrysler Pacifica Hybrid (PHEV)
2020 Nissan Leaf SV Plus (BEV)

LeftieBiker
Moderator
Posts: 16918
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: First Impressions of '21 Leaf SV

Thu May 06, 2021 1:14 pm

Only if you have wire thicker than 10 gauge there, like AWG #8. It might be a little safer to do what you propose, but it would still be a code violation. Safety-wise, never charging for more than 3 hours straight would be second best to fixing the circuit.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Academiguy
Posts: 10
Joined: Fri Mar 12, 2021 6:33 pm
Delivery Date: 13 Mar 2021
Leaf Number: 311706

Re: First Impressions of '21 Leaf SV

Thu May 06, 2021 1:24 pm

LeftieBiker wrote:
Thu May 06, 2021 1:14 pm
Only if you have wire thicker than 10 gauge there, like AWG #8. It might be a little safer to do what you propose, but it would still be a code violation. Safety-wise, never charging for more than 3 hours straight would be second best to fixing the circuit.
Since the electrician told me he was putting in a 40a subpanel, I think there's a pretty good chance the wiring to the subpanel is appropriate. I'll have to check on the wiring from the subpanel to the receptacle to make sure it can handle 40a. If it can, then I imagine it's safe to put the 40a breaker in the subpanel for the Nissan EVSE. If not, then I guess either I have to pull new wire or, as you say, limit charging sessions to 3 hours. Thanks for the advice!
2021 Chrysler Pacifica Hybrid (PHEV)
2020 Nissan Leaf SV Plus (BEV)

LeftieBiker
Moderator
Posts: 16918
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: First Impressions of '21 Leaf SV

Thu May 06, 2021 3:04 pm

Unfortunately, while it's possible that the EVSE circuit has heavier cable that was needed (maybe because he had a big roll of it left when installing the subpanel) it's more likely that he used #10 for the EVSE run.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jjeff
Posts: 2379
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: First Impressions of '21 Leaf SV

Fri May 07, 2021 3:52 am

Note #10 wiring is capable of 30a continuous it's just the breaker is almost surly 80% duty rated. It's possible to find breakers rated for 100% duty cycle but they by far are not the norm and I'd think the only place you could find one would be a wholesale/commercial place or probably online.
So again as long as you had a 30a 100% duty rated breaker, #10 wire, all connections secure and a quality 30a outlet, you should be able to get away with a continuous 27.5a(what a Nissan draws) load. If any of these are not the case things will get very warm and would be unsafe.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

LeftieBiker
Moderator
Posts: 16918
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: First Impressions of '21 Leaf SV

Fri May 07, 2021 5:00 am

Note #10 wiring is capable of 30a continuous it's just the breaker is almost surly 80% duty rated.
Thanks for the correction - I had forgotten that.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jjeff
Posts: 2379
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: First Impressions of '21 Leaf SV

Fri May 07, 2021 6:16 am

LeftieBiker wrote:
Fri May 07, 2021 5:00 am
Note #10 wiring is capable of 30a continuous it's just the breaker is almost surly 80% duty rated.
Thanks for the correction - I had forgotten that.
I googled "continuous rated circuit breakers" and found plenty of references to it, but not much on where to purchase them. Amazon was mostly a dead end. So while I believe they are available for some panels, saw references to Square-D and Seimens, they seem to be a rather rare commodity and I believe it's very safe to assume when you see a 30a breaker in a panel it will NOT be 100% duty rated.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

User avatar
Marktm
Gold Member
Posts: 656
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: First Impressions of '21 Leaf SV

Fri May 07, 2021 1:23 pm

LeftieBiker wrote:
Thu May 06, 2021 11:53 am
The best feature of Nissan Connect is the remote climate control access, and this continues for free after the trial period. I suppose the second best feature is either the ability to locate the car easily, or the ability to check the state of charge by opening the app and refreshing the data.
Leftie;
New problem with the new SV Plus:
My OpenEvse LCD started flashing red while charging at the 24 amps setting. I shut it down and tried retarting and it now shows L1 (its set up for L2). I think I've found the problem - the spade connector on one leg of the 240 VAC output to the J-1772 is charred - obviously a bad crimp originally that has been exacerbated by going to the higher amp settings.

Now - the issue is that the Leaf will not release the J-1772 connector. The 3 charge lights flash and beep. I've used my key fob to lock/unlock and does not work. I've disconnected the internal EVSE output (L1 and L2) to the J-1772 connector - so no feedback from the EVSE. Is there a way to "unlock" manually. I'm going to use the Nissan CC (unfortunately L1 only - no L14-50 receptacle installed yet). But I believe that will prove the OpenEVSE is malfunctioning - not the Leaf.

Could call the dealer - but likely get nothing but "bring it in" (somewhat difficult!!).
2012 Leaf SL
2021 Leaf SV Plus

User avatar
Marktm
Gold Member
Posts: 656
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: First Impressions of '21 Leaf SV

Fri May 07, 2021 1:58 pm

Status - got the J-1772 conn to release - hooked up the NIssan "trickle" charger and it works fine. My guess is that upping the amperes on the OpenEvse caused the spade connector to severly overheat and lose connection - possibly even the voltage sensor small gauge wiring - and that caused the overheating issue and also possibly a fault signal in the charging system (just guessing). Will get a more robust spade connector and try again.
2012 Leaf SL
2021 Leaf SV Plus

EatsShootsandLeafs
Posts: 710
Joined: Fri Aug 24, 2012 10:59 am
Delivery Date: 24 Aug 2012

Re: First Impressions of '21 Leaf SV

Mon May 10, 2021 10:39 am

I never use eco.

I like one-pedal drive but don't use it because it constantly throws the brake lights, whereas B-mode, which although not as aggressive with braking, does not. This makes me look less like a spaz to people behind me.

Return to “General / Main Owners Forum”