User avatar
davewill
Posts: 5080
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: BareEVSE - an EVSE circuit for under $5

Mon May 13, 2013 4:13 pm

8bits wrote:What do you think is the minimum for an EVSE work on a car like mine?
I have no interest in minimums. I think I now remember your situation. Are you the guy in Portugal with the grounding problems? Did you ever try the floating ground mod that was pointed out to you as a specific solution to your situation? Failing that, I'd bite the bullet, get the OpenEVSE parts and build one. You will then have full control over the GFCI and will hopefully be able to get it to work with your situation.

My other thought would be to purchase an EVSE locally, and have it professionally installed. That should also yield a working solution, since it should be designed for your electrical system.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

User avatar
Ingineer
Posts: 2741
Joined: Fri Oct 15, 2010 1:09 pm
Delivery Date: 13 Jul 2011
Leaf Number: 6969
Location: Berkeley, California
Contact: Website

Re: BareEVSE - an EVSE circuit for under $5

Mon May 13, 2013 4:39 pm

8bits wrote:What do you think is the minimum for an EVSE work on a car like mine?
If your ground is bad, the original Nissan EVSE will refuse to charge and flash it's READY indicator.

When we upgrade an EVSE going to Europe or areas known to have isolated grounds/earths, we disable the ground verification system. In the US it's required.

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

8bits
Posts: 13
Joined: Sat May 04, 2013 4:37 am

Re: BareEVSE - an EVSE circuit for under $5

Wed May 15, 2013 11:29 am

davewill wrote:I think I now remember your situation. Are you the guy in Portugal with the grounding problems? Did you ever try the floating ground mod that was pointed out to you as a specific solution to your situation?
I've been considering this idea and found here that would fail since power lines and earth signal works in a different way.
davewill wrote:Failing that, I'd bite the bullet, get the OpenEVSE parts and build one. You will then have full control over the GFCI and will hopefully be able to get it to work with your situation.
That's what I am trying to do, but my time is very expensive and so I want to build the minimum needed. Most protections on EVSE are already on my electric instalation.
davewill wrote:My other thought would be to purchase an EVSE locally, and have it professionally installed. That should also yield a working solution, since it should be designed for your electrical system.
No one here does that - not even the seller of Merdeces-Benz is giving me the solution.

8bits
Posts: 13
Joined: Sat May 04, 2013 4:37 am

Re: BareEVSE - an EVSE circuit for under $5

Wed May 15, 2013 11:32 am

Ingineer wrote:
8bits wrote:What do you think is the minimum for an EVSE work on a car like mine?
If your ground is bad, the original Nissan EVSE will refuse to charge and flash it's READY indicator.

When we upgrade an EVSE going to Europe or areas known to have isolated grounds/earths, we disable the ground verification system. In the US it's required.
BIG thank you for sharing your knowledge and experience Ingineer!! No one here can help me, telling what is the problem.

The ground/earth of my electrical instalation is not isolated but it may have a higher value of 20ohms max limit. Maybe I can try open original EVSE and see if I can "disable" the hardware that checks grounds/earths? ;-)

User avatar
davewill
Posts: 5080
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: BareEVSE - an EVSE circuit for under $5

Wed May 15, 2013 12:01 pm

8bits wrote:
davewill wrote:Failing that, I'd bite the bullet, get the OpenEVSE parts and build one. You will then have full control over the GFCI and will hopefully be able to get it to work with your situation.
That's what I am trying to do, but my time is very expensive and so I want to build the minimum needed. Most protections on EVSE are already on my electric instalation.
Yes, but the circuit you tried to build just doesn't have enough of the EVSE functionality to work, as you've seen. The OpenEVSE design is complete. It also allows you to selectively disable features as you seem to need.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

User avatar
Ingineer
Posts: 2741
Joined: Fri Oct 15, 2010 1:09 pm
Delivery Date: 13 Jul 2011
Leaf Number: 6969
Location: Berkeley, California
Contact: Website

Re: BareEVSE - an EVSE circuit for under $5

Wed May 15, 2013 12:04 pm

8bits wrote:The ground/earth of my electrical instalation is not isolated but it may have a higher value of 20ohms max limit. Maybe I can try open original EVSE and see if I can "disable" the hardware that checks grounds/earths? ;-)
If you want a sure-fire solution, simply order a new Panasonic unit from us, and I guarantee you it will work on your electrical system without issue, and still have all proper safeties in place. Since your time is limited, this solution will be simple, just plug it in and you'll be good to go. It's programmable, so you'll be able to run from 6 to 25 amps in 1 amp increments. (Provided your electrical system can handle this)

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

8bits
Posts: 13
Joined: Sat May 04, 2013 4:37 am

Re: BareEVSE - an EVSE circuit for under $5

Thu May 23, 2013 7:28 am

Ingineer wrote:If you want a sure-fire solution, simply order a new Panasonic unit from us, and I guarantee you it will work on your electrical system without issue, and still have all proper safeties in place. Since your time is limited, this solution will be simple, just plug it in and you'll be good to go. It's programmable, so you'll be able to run from 6 to 25 amps in 1 amp increments. (Provided your electrical system can handle this)
I am happy you have a solution for me - thanks!!

I will contact you by PM as I have some more questions about that EVSE.

EDIT: I couldn't sent a PM.

1. What protections does that EVSE have?
2. What protections do you disable?
3. Here in Portugal, we use Schuko plugs (http://en.wikipedia.org/wiki/Schuko" onclick="window.open(this.href);return false;). Can I get the EVSE with that plug?
4. What if the EVSE doesn't work with my Smart EV (version 3)?

User avatar
Ingineer
Posts: 2741
Joined: Fri Oct 15, 2010 1:09 pm
Delivery Date: 13 Jul 2011
Leaf Number: 6969
Location: Berkeley, California
Contact: Website

Re: BareEVSE - an EVSE circuit for under $5

Thu May 23, 2013 9:34 am

8bits wrote:I am happy you have a solution for me - thanks!!

I will contact you by PM as I have some more questions about that EVSE.

EDIT: I couldn't sent a PM.

1. What protections does that EVSE have?
2. What protections do you disable?
3. Here in Portugal, we use Schuko plugs (http://en.wikipedia.org/wiki/Schuko" onclick="window.open(this.href);return false;). Can I get the EVSE with that plug?
4. What if the EVSE doesn't work with my Smart EV (version 3)?
You can email us from our website (linked below). It has all standard J1772 protection systems, except we would be disabling the ground (earth) verification test, as this is why you are having trouble finding an EVSE that will work in Portugal. The GFCI (Ground Leakage Detection) protection will still be in full force. We do not normally stock Schuko plugs. We usually ship the unit with instructions on how to connect one you obtain locally. It's much cheaper that way, and all you need is a screwdriver and some wire strippers. If you are not comfortable installing your own, we will be happy to provide one for an additional cost, but we will have to special-order the Schuko from Europe, so there will be some delay. Note that the maximum allowed for a Schuko is only 16 amps. If you wanted to be able to charge faster, you'd need an IEC connector (and matching outlet) similar to this one:

Image

Since the unit is fully J1772 compliant, we guarantee it will work with your EV. If it didn't for some reason, you could return it and we would refund the cost.

Here is a link to the product page.

Here is a link to our FAQ section with lots of extra information.

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

8bits
Posts: 13
Joined: Sat May 04, 2013 4:37 am

Re: BareEVSE - an EVSE circuit for under $5

Thu May 23, 2013 3:41 pm

Ingineer wrote:
8bits wrote: 1. What protections does that EVSE have?
2. What protections do you disable?
It has all standard J1772 protection systems, except we would be disabling the ground (earth) verification test, as this is why you are having trouble finding an EVSE that will work in Portugal. The GFCI (Ground Leakage Detection) protection will still be in full force.
1. What are the "all standard J1772 protection systems"? Just that both you mention: ground (earth) verification test and GFCI (Ground Leakage Detection)?

2. There is another problem, my car plug is Menekes, different from that one on the Panasonic EVSE. I would need to exchange to Menekes plug and to Schuko plug, and if at the end the EVSE dones't work for some reason, I will not be able to send it to you.

ElectricLeaf
Posts: 4
Joined: Fri Jun 07, 2013 8:53 am
Delivery Date: 05 Jun 2013
Leaf Number: 408048

Re: BareEVSE - an EVSE circuit for under $5

Sun Jul 28, 2013 2:55 pm

Thank you BetterLeaf for posting your circuit.

I was just getting ready to start working on something like this myself.
personally I am only interested in something simple that works,
I am never going to try and sell it to anyone, and I could care less what any pencil pusher at some government agency thinks about how I should do it.
and if a dog is smart enough to break into my garage I am sure he will be smart enough to turn off my power supply before he starts chewing on the cord.

please don't get discouraged by people making negative comments, I was on another forum and wanted some help with ideas on making an adapter for NEMA #5-20 to J1772, I wanted to build it for under $10 because that's all I really thought it should cost. Someone on the forum was selling these adapters for around $250 and they freaked out and got everyone else to jump on the fear monger bandwagon. I ended up completing my adapter and it ended up costing me less than $10 and it easily fit in my pocket. But all the comments they made were unbelievable.

anyway, my only concern is about what would happen if there was a power outage during charging?

would it stop charging?
or would continue to charge when the power came back on?

it seems to me there are signals that must be sent back and forth to start so once interrupted it might have a problem and if the power is on that could possibly cause a problem for the car charger?

thanks again.

Return to “EVSE / Charging Equipment and Networks”