PV1
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Re: Duosida EVSE

Mon May 15, 2017 4:24 am

Yes, I believe those higher rates in the UK require 3-phase. However, here in the States, if 3-phase is available, it's typically through a DCQC. Except for Tesla vehicles, no production EV in the US has anything bigger than a 7.2 kW on-board.

I think for figuring out how the car charges so fast on level 1, CaniOn and an OBDLink LX bluetooth would be very helpful. Besides all of the battery stats, it can also tell what the incoming AC voltage and amperage is at the J1772 port. :geek:
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

Aerowhatt
Posts: 340
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Location: Albuquerque NM

Re: Duosida EVSE

Mon May 15, 2017 6:04 pm

I have a juice box 40. The old one which has adjustable 120vac amperage (8 to 16). I opened it up and turned it up from 12 amps to the max (which is supposed to be 16amps). Using canion and a kilowatt meter to corroborate it's results. Starting at 50% SOC so there wouldn't be any interference from an almost full battery. The car pulled 14 amps which implies that is it's limit (onboard charger) on 120VAC. It is a pretty fast charge for 120V registering 9 miles per hour on canion. Comparing to 19 or 20 miles per hour on a good L2 with minimal voltage drop. could it be different on earlier models than the 2014?

Aerowhatt
2014 cool silver ES, acquired new 4/2015
2014 Labrador Black Pearl ES, acquired new 3/2016

kiev
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Location: The Heart o' Dixie
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Re: Duosida EVSE

Mon May 15, 2017 7:49 pm

Sounds like a good test you made--thanks for sharing the results.
kiev = kenny's innovative electric vehicle

JoeS
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Re: Duosida EVSE

Tue May 16, 2017 12:50 am

Aerowhatt, thank you for performing the test. Sounds as though Mitsubishi limited the amperage to protect against just the scenario we've been discussing, and this is just about the 240vac current limit as well.
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Aerowhatt
Posts: 340
Joined: Wed Jan 28, 2015 1:52 pm
Location: Albuquerque NM

Re: Duosida EVSE

Tue May 16, 2017 6:17 am

People keep bringing up these issues, that lead to questions, that I hadn't thought of (like what is the max charge rate on 120V?). Once the question is in my head, curiosity nags me until I get the answer. Sometimes I wish I could get a curiosityectomy :?

Aerowhatt
2014 cool silver ES, acquired new 4/2015
2014 Labrador Black Pearl ES, acquired new 3/2016

Don
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Re: Duosida EVSE

Tue May 16, 2017 9:35 am

Aerowhatt wrote:Once the question is in my head, curiosity nags me until I get the answer. Sometimes I wish I could get a curiosityectomy :?
You're not the only one suffering! Sometimes I lay in bed when I should be going to sleep thinking about something or other that's been bothering me until I eventually 'solve' it. Miss out on some sleep, but sleep really well once it's resolved and out of my mind

Don
2012 iMiEV SE Premium, White
2012 iMiEV SE, White
2014 Ford Transit Connect XLT SWB wagon, 14,000 miles
1994 Miata 60K miles - Soon to be sold
1979 Honda CBX six into six

GdB
Posts: 136
Joined: Tue Aug 12, 2014 4:06 pm

Duosida EVSE 14 Amps with i-MiEV

Fri Jul 21, 2017 12:22 pm

In all the posts I have not seen it clearly stated how many Amps the Duosida EVSE uses with the i-MiEV.

Connected to 120V, through my EMW Wattbox with EKM OmniMeter II, my Duosida EVSE charging my i-MiEV indicated either 14.0 or 14.2 Amps.

So it's ok to plug into 5-20R outlets with 12g wiring.
My EVs: Mitsubishi Zero (2012 Mitsubishi i-MiEV and 2014 Zero S 11.4 Motorcycle)

GdB
Posts: 136
Joined: Tue Aug 12, 2014 4:06 pm

Re: Duosida EVSE

Fri Jul 21, 2017 12:27 pm

As a side note, I measured the blade thickness of Leviton 5-15P and 5-20P add-on plug adapters, and they are the same, so the 5-20P just has a rotated blade, no other difference.

The receptacle wiring being 14g or thinner wiring is the only reason for 20% derating. A 5-15P could pull 14 Amps all day with 12g wiring, the 20% derate limit is 16 Amps.
My EVs: Mitsubishi Zero (2012 Mitsubishi i-MiEV and 2014 Zero S 11.4 Motorcycle)

GdB
Posts: 136
Joined: Tue Aug 12, 2014 4:06 pm

Re: Modifying the EVSE charger?

Fri Jul 21, 2017 12:29 pm

JoeS wrote:Up until now, on 120vac all the EVSEs we've been dealing with have themselves only allowed a maximum current draw of 12A, which, at 80%, is the maximum allowable steady-state current draw from a conventional 120vac 15A (NEMA 5-15) circuit.

For this reason, we have not been concerned with higher currents on 120vac.

This Duosida EVSE evidently is pre-set to allow 16A (irrespective of whether it's 120vac or 240vac) and requires a 20A source circuit.

Does anyone know what is the maximum current draw by the i-MiEV on 120vac if the input current is unrestricted by the EVSE ?

Note: we do know that the maximum current draw by the i-MiEV charger on 240vac is around 13A.


Connected to 120V, through my EMW Wattbox with EKM OmniMeter II, my Duosida EVSE charging my i-MiEV indicated either 14.0 or 14.2 Amps.

I measured the blade thickness of Leviton 5-15P and 5-20P add-on plug adapters, and they are the same, so the 5-20P just has a rotated blade, no other difference.

The receptacle wiring being 14g or thinner wiring is the only reason for 20% derating. A 5-15P could pull 14 Amps all day with 12g wiring, the 20% derate limit is 16 Amps.
My EVs: Mitsubishi Zero (2012 Mitsubishi i-MiEV and 2014 Zero S 11.4 Motorcycle)

JoeS
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Re: Modifying the EVSE charger?

Fri Jul 21, 2017 4:23 pm

GdB wrote:
JoeS wrote:Does anyone know what is the maximum current draw by the i-MiEV on 120vac if the input current is unrestricted by the EVSE?
Connected to 120V, through my EMW Wattbox with EKM OmniMeter II, my Duosida EVSE charging my i-MiEV indicated either 14.0 or 14.2 Amps.
Thank you for that valuable answer. Going from 15A-rated connectors to 20A entails more than just wire gauge size or terminal thickness, but I don't know what all the variables are for certification at 20A. Although I would be less uncomfortable using name-brand connectors such as Leviton in this application of 14A using 5-15P and 5-15R (assuming wire gauge is 12AWG which I don't believe it is on the Mitsu EVSE (Edit: I should have said Duosida), the electrical code being what it is precludes such usage and I'd hate to have something untoward happen. As a minimum I would use a spot thermometer to check the connector and wire temperatures once it's running.

As a stark visual reminder, this is just one of many connectors I've cooked over the years in battery charging applications, and the wire going to this connector I believe was either 10AWG or 12AWG. I'd have to look through my files but I can probably find some more uglies.
http://myimiev.com/forum/viewtopic.php?f=24&t=3758#p32857
GdB wrote:...The receptacle wiring being 14g or thinner wiring is the only reason for 20% derating. A 5-15P could pull 14 Amps all day with 12g wiring, the 20% derate limit is 16 Amps.
I didn't know that. Source?
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

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