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EVDRIVER
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Joined: Sat Apr 24, 2010 7:51 am

Re: 2018 Leaf EVSE

Mon Sep 18, 2017 9:27 pm

JPWhite wrote:
EVDRIVER wrote:Only special breakers rated for continuous load rated with no de rating can handle 30a, this is also subject to approval by local code. These breakers are not the same as traditional breakers subject to the 25% rule. The design again shows how Nissan and other companies don't get the space and just mirror a plug end with no real thought in the process. Many existing 30 circuits also are quite old and not well suited for this. All this for 3a more which is the most reduculous part.


It could be That Nissan stuck 30Amp on the label to match its conductors, who knows what it actually draws at full wick.


That's what I was thinking.

Tandemrider
Posts: 15
Joined: Sat Jul 09, 2016 5:42 am
Delivery Date: 23 Sep 2011
Leaf Number: 008561

Re: 2018 Leaf EVSE

Thu Dec 07, 2017 4:56 pm

The 7.6 Kw Solar Edge HD inverter can be wired to provide an EVSE directly from the inverter. In the evening, when there is no solar power, it will charge an EV at 7.6 kw 32 amps from the grid. During the day, if there is enough excess solar energy, it "boosts" the EV charging to 9.6 kw 40 amps. Can the 2018 Nissan Leaf built-in charger accept 40 amps or is it limited to 32 amps or less. Are Teslas the only currently available EV's whose built-in chargers can accept 40 amps?
I know that DC fast chargers supply more power than 40 amps but is that because they have different connectors than the usual 240v SAE J1772 connector?

GlennD
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Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: 2018 Leaf EVSE

Sun Dec 10, 2017 1:32 pm

All EVSE's that I am aware of are limited to 32A or less. Teslas's currently have 50A chargers but the supplied EVSE is 40A. To exceed that would require a redesign of the EVSE. As it is they are pushing the poor Potter and Bloomfield relay.Two two cars with Tesla drive trains ( Toyota and Mercedes) can charge at 40A\ but that is all that I am aware of.

All cars that can charge at 40A can also charge fine from a 30A EVSE. Since Tesla's come with a 40A EVSE 40A EVSE's are specialty items and they are priced accordingly. If you charge overnight then 30A is fine. The most current Leaf's can charge at via L2 is 27.5A
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

smkettner
Posts: 7017
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: 2018 Leaf EVSE

Sun Dec 10, 2017 1:38 pm

Clipper Creek and others go to at least 80 amps and need a 100 amp circuit to drive them.
Car will never charge faster on L2 than the on board charger is rated.
The evse and vehicle will communicate to automatically charge at the maximum safe level on any L2 charging station.
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV

GlennD
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Posts: 1194
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: 2018 Leaf EVSE

Sun Dec 10, 2017 1:46 pm

I built my own EVSE and I over built it. Since I only needed a 40A cable for my B250E I put one of Tony's Quick Charge Power cables on it.

If I was using a 30A fixed EVSE like Clipper Creek 30A would have been fine. but since OpenEVSE supports 40A why not. I had the cable on hand. The input is a 50A range cable and I am using a 65A contactor. At 30A everything was loafing. At 40A I still have a reserve.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

GlennD
Forum Supporter
Posts: 1194
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: 2018 Leaf EVSE

Sun Dec 10, 2017 1:57 pm

by the way, 80A is the max of the J1772 spec. At 80% it would require a 100A circuit. Most cars do not come close to that. The only exception that I can think of is a dual charger Tesla.

The car sets the current as long as their is enough. An 80A EVSE would work for most cars but most of the available current would be ignored. It would be a giant waste of money.
2012 Cayenne Red SL traded for:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250E

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