cwerdna
Posts: 9589
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: How to check outlet power output?

Sun Feb 24, 2019 7:05 pm

Spacep0d wrote: So, with level 2 charging, this will use the same amps (12) but give me much faster charging at 6.6 kW? This is much more efficient isn't it? From what I read, I will have more efficiency and cheaper with respect to electricity costs, right?
On the first no. In order to charge at 6.6 kW at 240 volts, it'll need to be 27.5 amps.

6600 watts / 240 volts = 27.5 amps

Yes, it is more efficient to charge at 240 volts than 120.

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

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

LeftieBiker
Moderator
Posts: 12799
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: How to check outlet power output?

Sun Feb 24, 2019 7:45 pm

L-2 charging can use 12 amps (15 amp circuit) or 16 amps (20 amp circuit) but at twice the voltage. So yes, a low power L-2 setup can be double the charge rate of an L-1 setup. Most of them are rated for more amps, though, so you get higher multiples of the L-1 charge rate.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

cwerdna
Posts: 9589
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: How to check outlet power output?

Sun Feb 24, 2019 7:58 pm

^^^
Indeed. Clipper Creek sells L2 EVSEs with as low as 12 amp output (requires 15 amp circuit) like the LCS-15 at https://store.clippercreek.com/level2?s ... &order=ASC.

And yep, 12 amps * 240 volts = 2,880 watts = 2.88 kW.

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

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

GlennD
Forum Supporter
Posts: 1493
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 May 2013
Leaf Number: 410357
Location: Anaheim

Re: How to check outlet power output?

Sun Feb 24, 2019 8:21 pm

Supplied Level 1 EVSE's are all at 12A. After market EVSE;s like the OpenEVSE can be set to 16A (80% 20A). The 12A EVSE is at (80% of 15A). That is safe for all outlets in goods condition.
:
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
White Ioniq limited.It sits just fine

SageBrush
Posts: 4608
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: How to check outlet power output?

Sun Feb 24, 2019 8:53 pm

Your test of charging 18% in a little over 5 hours works out to ~ 12 Amps at 120V


I few guesses then:

You have a 120V wiring upgraded to allow 20 Amp burst, 16 Amp continuous

If you want to charge at 240V you have to replace the outlet and the breaker (presuming your panel can accommodate the load and has space for the physically larger breaker.) Doing so would allow 0.240*16 = 3.84 kW charging, about 3x faster than you have.
Last edited by SageBrush on Mon Feb 25, 2019 5:58 am, edited 1 time in total.
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Two years in Colorado, now in NM
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

Oilpan4
Gold Member
Posts: 721
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: How to check outlet power output?

Mon Feb 25, 2019 4:07 am

Charging on 240v is more efficient.
Converting 240v AC to 380v DC is a lot easier than converting 120v AC to 380v DC.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

wmcbrine
Posts: 123
Joined: Sun Aug 09, 2015 3:23 am
Location: Maryland

Re: How to check outlet power output?

Mon Feb 25, 2019 9:50 pm

Spacep0d wrote:I have a garage power outlet which was 'upgraded' by an electrician to stop my large air compressor for tripping the breaker. Is there a way to tell what kind of power it's putting out?
The previous comments aren't wrong, but they didn't actually answer this question.

https://www.amazon.com/Proster-Multimet ... 01FU6YFFE/

Just look for a "multimeter". They range from very cheap, to very expensive; for this purpose, a very cheap one will do. Set it to AC voltage mode, and carefully insert a probe into each of the two "slits" on the outlet. That will show you what the voltage really is (not just what it should be, as the plug shape will tell you).

If you're not comfortable with that, consult an electrician.

Spacep0d
Forum Supporter
Posts: 63
Joined: Wed Feb 13, 2019 6:14 pm
Delivery Date: 14 Feb 2019
Leaf Number: 309151
Location: Santa Clarita, CA
Contact: Website

Re: How to check outlet power output?

Mon Feb 25, 2019 10:00 pm

wmcbrine wrote:
Spacep0d wrote:I have a garage power outlet which was 'upgraded' by an electrician to stop my large air compressor for tripping the breaker. Is there a way to tell what kind of power it's putting out?
The previous comments aren't wrong, but they didn't actually answer this question.

https://www.amazon.com/Proster-Multimet ... 01FU6YFFE/

Just look for a "multimeter". They range from very cheap, to very expensive; for this purpose, a very cheap one will do. Set it to AC voltage mode, and carefully insert a probe into each of the two "slits" on the outlet. That will show you what the voltage really is (not just what it should be, as the plug shape will tell you).

If you're not comfortable with that, consult an electrician.
Thank you all. Such great info here. ;)
--
2018 Nissan LEAF S
^My First EV!

GlennD
Forum Supporter
Posts: 1493
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 May 2013
Leaf Number: 410357
Location: Anaheim

Re: How to check outlet power output?

Sat May 11, 2019 3:16 pm

Spacep0d wrote:Hi there,

I have a garage power outlet which was 'upgraded' by an electrician to stop my large air compressor for tripping the breaker. Is there a way to tell what kind of power it's putting out? I suspect it's a regular 120v outlet, but am curious if there's a way to test this myself? Why did one of my outlets work fine for trickle charging, but the other one did not?

I have the optional Nissan EVSE connected to it (came with the optional DCFC connector in a 2018 LEAF) and it seems to be charging at a decent clip. 62-80% in a little over 5 hours. Perhaps this is normal. Opinions welcome!

Thanks!

All you can do is check the breaker. If your compressor is on a normal circuit then it may be a 20A breaker.

The stock Leaf EVSE is set for 12A (80% of 15A). That is the NEC max for a 15A circuit.

As long as your compressor has a plug on it it draws less than 15A. If it is hard wired then it could be anything. There are 20A outlets with an extra slot but they are rare.
:
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
White Ioniq limited.It sits just fine

Return to “EVSE / Charging Equipment and Networks”