jflowers
Posts: 5
Joined: Sat Mar 04, 2017 11:29 am
Delivery Date: 04 Mar 2017

NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 10:27 am

Hi there. Had an electrician install a NEMA 14-50 receptacle (50 Amp) and looking at portable chargers.

If I get a 32 Amp Charger (Vs. a 40 Amp one), is the only downside waiting a bit longer? I don't have to worry about the portable charging unit getting mucked up? Also, what about the Leaf, would this mess up it's expectations?

Thanks so much in advance.

WetEV
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Location: Near Seattle, WA

Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 10:43 am

jflowers wrote:Hi there. Had an electrician install a NEMA 14-50 receptacle (50 Amp) and looking at portable chargers.

If I get a 32 Amp Charger (Vs. a 40 Amp one), is the only downside waiting a bit longer? I don't have to worry about the portable charging unit getting mucked up? Also, what about the Leaf, would this mess up it's expectations?

Thanks so much in advance.


To a Leaf, no difference.
WetEV
#49
Most everything around here is wet during the rainy season. And the rainy season is long.
2012 Leaf SL Red (Totaled)
2014 Leaf SL Red

smkettner
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Location: Orange County, CA

Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 11:49 am

LEAF does not go 40 amps. 32 will charge at full speed.

I would still get the 40 amp evse even though the extra power does not help at this time.
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
I-Pace on order for end of 2018 delivery

wwhitney
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Location: Berkeley, CA

Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 11:52 am

jflowers wrote:Hi there. Had an electrician install a NEMA 14-50 receptacle (50 Amp)

The receptacle is 50 amps, but is it on a 50 amp circuit? Maybe that's what your parenthetical comment means, but it is good to be certain.

Cheers, Wayne

jflowers
Posts: 5
Joined: Sat Mar 04, 2017 11:29 am
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 12:17 pm

wwhitney wrote:
jflowers wrote:Hi there. Had an electrician install a NEMA 14-50 receptacle (50 Amp)

The receptacle is 50 amps, but is it on a 50 amp circuit? Maybe that's what your parenthetical comment means, but it is good to be certain.

Cheers, Wayne



Hey there - you are correct, the receptacle is on a 50 Amp breaker.

wwhitney
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 12:23 pm

jflowers wrote:Hey there - you are correct, the receptacle is on a 50 Amp breaker.

In that case, you can get a 32 amp EVSE or a 40 amp EVSE, whichever you like. As others have commented, the Leaf will charge at the same rate either way, as it is limited by its internal charger to I think 27 amps. But if someone visits you with a car with a more powerful internal charger (say a Tesla Model S), that car could charge faster if you choose a 40 amp EVSE.

Cheers, Wayne

SageBrush
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 12:46 pm

I would shy away from buying a portable EVSE marketed as 40 Amp unless it was a local company with a very good reputation and warranty. Actually, I would shy away from a 32 Amp portable EVSE also.

EVSEs meant to be installed on the wall and from reputable companies like Clipper Creek can run at 40 Amp safely and for a long time.

Don't be penny wise and fire foolish.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

jflowers
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Joined: Sat Mar 04, 2017 11:29 am
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 8:31 pm

SageBrush wrote:I would shy away from buying a portable EVSE marketed as 40 Amp unless it was a local company with a very good reputation and warranty. Actually, I would shy away from a 32 Amp portable EVSE also.

EVSEs meant to be installed on the wall and from reputable companies like Clipper Creek can run at 40 Amp safely and for a long time.

Don't be penny wise and fire foolish.


But if the car only draws X Amps, wouldn't a portable charger that is rated for a higher Amperage actually be a safer option?

I have a power supple unit in my computer that's good to a kilowatt, but my computer doesn't take that much current so I never hit full load. The PSU is never being stressed.

smkettner
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 10:32 pm

No electronics get stressed in an EVSE. Relay closes and it is just wire at that point.
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
I-Pace on order for end of 2018 delivery

cwerdna
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Re: NEMA 14-50 ( 32 Amp Vs. 40 Amp) Charger Q

Sun Feb 11, 2018 11:34 pm

OP, you're looking for an EVSE, not a charger. Please see viewtopic.php?p=262630#p262630.

These may also help:
https://www.clippercreek.com/ev-chargin ... c-vehicle/
https://www.clippercreek.com/three-thin ... arge-time/

Max Leaf vehicle acceptance rate on AC charging is 6.6 kW for a Leaf w/6.6 kW on-board charger. 6600 watts / 240 volts = 27.5 amps

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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