SecondTime
Posts: 1
Joined: Fri Oct 15, 2010 4:03 pm

EVSE Safety

Fri Oct 15, 2010 5:30 pm

Does someone know if the EVSE will stop delivering power to the Leaf if the power inverter on the Leaf goes bad?

Had a problem with the EV1
See: http://www.ka9q.net/ev/ev1fire.html
and just want to make sure it won't happen again. Thanks.

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evnow
Moderator
Posts: 11480
Joined: Thu Apr 22, 2010 11:41 am
Delivery Date: 25 Feb 2011
Leaf Number: 303
Location: Seattle, WA

Re: EVSE Safety

Fri Oct 15, 2010 5:40 pm

I guess.

ANyway, welcome to the forum. Nice handle ...
1st Leaf : 2/28/2011 to 5/6/2013
2nd Leaf : 5/4/2013 to 3/21/2017
Volt : 3/25/2017 to 5/25/2018
Model 3 : 5/10/2018 to ?

smkettner
Posts: 7380
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: EVSE Safety

Fri Oct 15, 2010 5:48 pm

I might be wrong but the charger and inverter are probably separate items that work independently
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
RAV4 traded in for I-Pace Dec 2018

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johnr
Posts: 884
Joined: Sun May 02, 2010 2:08 pm
Delivery Date: 11 May 2011
Leaf Number: 2151
Location: Exeter, CA

Re: EVSE Safety

Fri Oct 15, 2010 10:24 pm

smkettner wrote:I might be wrong but the charger and inverter are probably separate items that work independently
Yes that is as I understand it as well. Maybe the OP meant to ask if the EVSE shuts off in the event the on-board charger goes bad? And my guess is that it probably would.
My trip to Mineral King and the value of regen

Charging stations, electrical adapters, and portable CHAdeMO quick chargers

2011 upgrade: Fossil < Leaf. 2014 upgrade: Leaf < imiev. 2017 upgrade: imiev < tesla. Done upgrading.

tps
Posts: 1262
Joined: Sun Sep 19, 2010 7:40 pm
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Leaf Number: 18044
Location: Philadelphia, PA

Re: EVSE Safety

Sat Oct 16, 2010 5:03 pm

I don't think the purpose of the EVSE is to prevent problems if the EV or on-board charger malfunctions. At the other end of the spectrum, however are those who don't understand why a traditional NEMA dryer or range outlet is not a suitable standard for EV recharging.

What does an EVSE do?

1. It automatically enforces the recommended practice of de-energizing the power before the current carrying contacts break. With NEMA type RV outlets this must be done manually.
2. It contains a GFCI circuit to shut off power if unsafe ground leakage occurs. Most dryer and range outlets don't have GFCI protection; it is starting to become more common on RV outlets.
3. It generates a pilot signal to automatically tell the EV charger how much current it can draw without tripping the breaker. This allows a flexible, universal connector which will work in many situations, If the car used a NEMA plug, there would be no automatic way to adjust the charge rate to the circuit capacity.
4. It prevents the EV from back-feeding into the power panel. Eventually, this will change when V2G becomes a reality, but until those safety standards are set, the EVSE is a gatekeeper which prevents it.

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