User avatar
rdhauser
Gold Member
Posts: 111
Joined: Fri Jan 21, 2011 9:30 pm
Delivery Date: 05 Jul 2011
Leaf Number: 5287
Location: Olympia, Washington

Checking EVSE Wiring for 2018

Wed Nov 15, 2017 2:50 pm

We're planing to purchase a 2018. Our current EVSE is one of the Blink units installed under the initiative of US DOT back in 2011. I'm not going to use the Blink unit, but I'd like to be sure that the circuit is robust. It's a 40 Amp circuit breaker (spans two slots) and produces 240v. The breaker says 10kA. Don't know what that means. Printed on the wire to the breaker is "Encore Wire Corp 8/2 W/G Type NM-B 600v (UL) 09/Dec/10 15:44 3933 4711 4607 60" .

I'm assuming the wiring is fine, but if someone who knows about such things could reply, I'd appreciate it.
Dick
Carwings Name OlyLeaf
Glacier Pearl SLe 005287.
Reserved 4/21/10, Ordered 1/1/11, BLINKed 6/14/11, Delivered 7/5/11, Reserve deposit Refunded 7/8/11.

GlennD
Forum Supporter
Posts: 1196
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: Checking EVSE Wiring for 2018

Wed Nov 15, 2017 3:12 pm

A 40A breaker is appropriate for a 30A blink. It is good for up to 32A. The most a Leaf can draw is 27.5A so it should be fine for your EVSE. 32A is 80% of 40A and the most the NEC allows. Assuming there is enough current available the car's charger sets the current. If less is available it will match the available current.

If the 2018 is unchanged then it is 27.5A. The most non Tesla chargers draw is 30A. My old VW charged at 30A. My B charges at 40A due to its Tesla drive train.
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

GerryAZ
Gold Member
Posts: 1481
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Checking EVSE Wiring for 2018

Thu Nov 16, 2017 10:06 am

You need a new 30A or 32A EVSE if you are replacing the Blink to get maximum charging capability from your branch circuit (40A circuit and breaker rating at 80% for continuous load is 32A maximum EVSE rating). I would not recommend using the Blink at 30A unless the J1772 plug has been replaced because they may have loose internal connections (see other threads regarding early Blink units). I never had a problem with Blink L2 public units charging the 2011 because it would only draw 18A at 208V. The 2015 will draw 30A at 208V (27A at 240V) and I have had the J1772 connectors get hot on a couple of Blink L2 public units.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

smkettner
Posts: 7018
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: Checking EVSE Wiring for 2018

Fri Nov 17, 2017 7:00 pm

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
Forum Supporter
Posts: 1196
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 Jul 2013
Leaf Number: 410357
Location: Anaheim

Re: Checking EVSE Wiring for 2018

Sat Nov 25, 2017 9:13 pm

GerryAZ wrote:You need a new 30A or 32A EVSE if you are replacing the Blink to get maximum charging capability from your branch circuit (40A circuit and breaker rating at 80% for continuous load is 32A maximum EVSE rating). I would not recommend using the Blink at 30A unless the J1772 plug has been replaced because they may have loose internal connections (see other threads regarding early Blink units). I never had a problem with Blink L2 public units charging the 2011 because it would only draw 18A at 208V. The 2015 will draw 30A at 208V (27A at 240V) and I have had the J1772 connectors get hot on a couple of Blink L2 public units.



I have purchased a half dozen Blink cables on eBay. I soldered the crimp connections. All but one was perfect. The one clearly had problems. It was a real challenge to solder.

Blink set connected EVSE's to 24A to avoid overheating. Originally Leaf's charged at 16A and the Blink units were fine. If you have a Blink unit I recommend changing out the J1772 cable. Tucson EV has 30A cables for $125 and Quick Charge Power has 40A cables in several lengths. A 25ft cable is just over $200 shipped. The Quick Charge cables like the Tesla cables use paired L wires for a very small size. Otherwise the wires are #10 and is good for 32A. The Quick Charge cable uses paired #12 wires. That makes it good for 40A or less.
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

Return to “EVSE / Charging Equipment and Networks”