baustin
Posts: 476
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: EVSE options for 2013+ Leafs

Tue Mar 24, 2015 6:18 pm

I bought and installed one made by GE Industrial. I could not find it for sale anywhere else, and Google provided no additional information. It met my requirements, hard-wired and outdoor, so I took a gamble and ordered it for $449 (+tax, free shipping). It works well, was less expensive than the other units I looked at, and I'm quite happy with it. I did add one of the hangers from Canada, it arrived in less than a week.

http://www.homedepot.com/p/GE-EV-Charge ... /205808537

This could also be used as a portable unit. The wall mounts are removable, and the hole has to be added to the case (Hoffman, NEMA3R, Plastic) for the electrical connection. It would be very easy to install a cord and plug, instead of doing a hard-wire mounting.
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

chris1howell
Posts: 649
Joined: Tue Aug 10, 2010 1:40 pm
Delivery Date: 15 Jun 2011
Leaf Number: 4122
Location: Lancaster, Ca

Re: EVSE options for 2013+ Leafs

Tue Mar 24, 2015 6:22 pm

dhanson865 wrote:Still I've looked at the open EV SEs for sale on this forum and even though some look quite impressive I wouldn't offer any of them to my coworkers that expect everything to be retail quality.


You can expect that to change very soon. I have convinced one of the regular builders here to offer a stock build in addition to the highly modified custom builds he currently offers. Both guys are very talented and the build quality is fantastic. I think there will be plenty of demand for a stock unit that is built well.
2011 LEAF: Red SL #04122
2012 Tesla Model S #01530
EVSE: OpenEVSE, 40A L1/L2 -- http://www.openevse.com
PV System: 28 x 210W -> 5.8 kW DC

OpenEVSE Store: http://store.openevse.com

MikeD
Posts: 585
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: EVSE options for 2013+ Leafs

Wed Mar 25, 2015 7:24 am

baustin: I notice from your link that GE's DuraStation is ETL listed, but not UL listed, whereas GE's Watt-Station is both UL listed and ETL listed, as are most commercial EVSEs that I am aware of. From a safety standpoint I wonder why.

I looked at the "Residential DuraStation: Installation Guide" using Home Depot's link and found that it documents its EVSE's controlling 240v circuit breaker can be 40a, 30a, 20a, or 15a depending on whether an internal jumper is set for, respectively, 30a, 24a, 16a, or 12a maximum current draw from the EV. This is the only commercial EVSE that I know of that allows different current output settings AND allows a reduced circuit breaker rating. All the others (Siemens VersiCharge and Ecotality's Blink) ALWAYS require a 40a breaker regardless of a selected reduced output current, undoubtedly as a desirable extra measure of safety (to reduce the possibility of a breaker less than 40a inadvertently being used when the selected current draw x 125% is greater than that).

The following from Siemens explains its EVSE's current reduction capability rationale: "Amperage Adjustment - Installing electrical vehicle chargers into older homes can be a challenge. With the Siemens VersiCharge, the EVSE power output can be adjusted to match facility capability. Increments range from a maximum power setting of 7.2 kW down to 1.8 kW.".

It seems it may be too easy to open the DuraStation and expose electrically live parts, jumpers, etc as the Guide simply reads "Step 5 - Open the front cover of the enclosure." and "Step 9 - Replace cover.".

One further observation is this Installation Guide does not specify the EVSE circuit be a dedicated one, which I suspect is an (unfortunate) oversight. Contrast this rather skimpy 6 page document with the generously detailed 33 page "Installation and Operations Manual" for the VersiCharge.

QueenBee
Posts: 1564
Joined: Sun Aug 08, 2010 5:14 pm
Delivery Date: 20 Jun 2011
Leaf Number: 2062
Location: Bellevue (Seattle), WA

Re: EVSE options for 2013+ Leafs

Wed Mar 25, 2015 12:53 pm

dhanson865 wrote: I failed and wasted hundreds of dollars in parts (that hopefully gets hidden away and never gets sold to anyone).
chris1howell wrote:
I am very sorry you had trouble with your build.


Interesting info but to be clear I've never tried making an open ev se.


I'd be happy to taken your OpenEVSE parts off your hand and turn them into a new EVSE.

baustin
Posts: 476
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: EVSE options for 2013+ Leafs

Wed Mar 25, 2015 6:48 pm

MikeD wrote:baustin: I notice from your link that GE's DuraStation is ETL listed, but not UL listed, whereas GE's Watt-Station is both UL listed and ETL listed, as are most commercial EVSEs that I am aware of. From a safety standpoint I wonder why.

I looked at the "Residential DuraStation: Installation Guide" using Home Depot's link and found that it documents its EVSE's controlling 240v circuit breaker can be 40a, 30a, 20a, or 15a depending on whether an internal jumper is set for, respectively, 30a, 24a, 16a, or 12a maximum current draw from the EV. This is the only commercial EVSE that I know of that allows different current output settings AND allows a reduced circuit breaker rating. All the others (Siemens VersiCharge and Ecotality's Blink) ALWAYS require a 40a breaker regardless of a selected reduced output current, undoubtedly as a desirable extra measure of safety (to reduce the possibility of a breaker less than 40a inadvertently being used when the selected current draw x 125% is greater than that).

The following from Siemens explains its EVSE's current reduction capability rationale: "Amperage Adjustment - Installing electrical vehicle chargers into older homes can be a challenge. With the Siemens VersiCharge, the EVSE power output can be adjusted to match facility capability. Increments range from a maximum power setting of 7.2 kW down to 1.8 kW.".

It seems it may be too easy to open the DuraStation and expose electrically live parts, jumpers, etc as the Guide simply reads "Step 5 - Open the front cover of the enclosure." and "Step 9 - Replace cover.".

One further observation is this Installation Guide does not specify the EVSE circuit be a dedicated one, which I suspect is an (unfortunate) oversight. Contrast this rather skimpy 6 page document with the generously detailed 33 page "Installation and Operations Manual" for the VersiCharge.


The manual is a bit sparse. It seems that it was written for experienced installers, and lacks much of the detail and explanation found in other EVSE manuals. It also fails to mention that Torx Security Screws (two T25 bits included) are used on the cover.

I have included a link to some pictures, including the labels on the case. It says that it is built to UL standards. I'm guessing they are awaiting UL certification, or feel that it is not necessary for this device. It may have something to do with it being shipped with no cord attached.

Bill

https://onedrive.live.com/redir?resid=D ... =folder%2c
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

dhanson865
Moderator
Posts: 1477
Joined: Wed May 25, 2011 7:12 am
Leaf Number: 16156
Location: Tennessee

Re: EVSE options for 2013+ Leafs

Wed Mar 25, 2015 10:01 pm

QueenBee wrote:
dhanson865 wrote: (that hopefully gets hidden away and never gets sold to anyone).
chris1howell wrote:
I am very sorry you had trouble with your build.


Interesting info but to be clear I've never tried making an open evse.


I'd be happy to taken your NONEXISTANT OpenEVSE parts off your hand and turn them into a new NONEXISTANT EVSE.


I was quoted out of context. I don't have any parts. I was using a phrase to describe a archetype such as "... and he looked more like a fighter pilot than a engine mechanic". The kind of stupid colorful phrase you might hear on a cop show or in a murder mystery. I obviously didn't use enough punctuation to delineate the color commentary.

You're going to have to use my words to build an EVSE if you want to use something that I failed with.

CAN I BE ANY MORE CLEAR THAT I HAVE NEVER TRIED TO BUILD AN EVSE?
2012 Leaf tires 195/65/15 Dunlop Enasave 01 A/S, 15" Rims
wiki/index.php?title=Real_World_Battery_Capacity_Loss
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QueenBee
Posts: 1564
Joined: Sun Aug 08, 2010 5:14 pm
Delivery Date: 20 Jun 2011
Leaf Number: 2062
Location: Bellevue (Seattle), WA

Re: EVSE options for 2013+ Leafs

Wed Mar 25, 2015 10:33 pm

dhanson865 wrote:
QueenBee wrote:
I'd be happy to taken your NONEXISTANT OpenEVSE parts off your hand and turn them into a new NONEXISTANT EVSE.


I was quoted out of context. I don't have any parts. I was using a phrase to describe a archetype such as "... and he looked more like a fighter pilot than a engine mechanic". The kind of stupid colorful phrase you might hear on a cop show or in a murder mystery. I obviously didn't use enough punctuation to delineate the color commentary.

You're going to have to use my words to build an EVSE if you want to use something that I failed with.

CAN I BE ANY MORE CLEAR THAT I HAVE NEVER TRIED TO BUILD AN EVSE?


Oh, now I see. You aren't the I who failed. I was figuring you failed before you even tried to build it. Any links to the people your were referring to who did fail?

ishiyakazuo
Posts: 330
Joined: Sat Mar 21, 2015 5:59 pm
Delivery Date: 20 Mar 2015
Location: Chicagoland, USA

Re: EVSE options for 2013+ Leafs

Tue Mar 31, 2015 7:14 pm

MikeD wrote:All the others (Siemens VersiCharge and Ecotality's Blink) ALWAYS require a 40a breaker regardless of a selected reduced output current, undoubtedly as a desirable extra measure of safety (to reduce the possibility of a breaker less than 40a inadvertently being used when the selected current draw x 125% is greater than that).

But if the wiring doesn't support that current, that's actually less safe... the breaker tripping is the least of someone's worries when installing an EVSE. If the breaker trips and something down the line doesn't meet or exceed the current capacity allowed by the breaker, that means the breaker is doing its job ;) I think GE is actually doing it right here.

(By the way, I've also got a GE DuraStation residential unit. Seems to do the trick, but that Hoffman case is way too deep for what it needs to be.)
2012 LEAF SL in Cayenne Red
40 mile R/T commute in Chicagoland
Leaf Spy Lite (June 2015, 22513 miles): AHr = 56.86, SOH = 86%, 393.13V, Hx = 73.55%, 924 L1/L2s, min/avg/max = 4.080 4.097 4.109 (29mV)

MikeD
Posts: 585
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: EVSE options for 2013+ Leafs

Wed Apr 01, 2015 4:51 am

ishiyakazuo: You are correct that I should have also mentioned and emphasized that 8 AWG (or the thicker 6 AWG, especially if required by code for, say, a long cable run) is also required along with the 40a breaker: from the current "Installation and Operations Manual": - Use 6-8 AWG, 75C copper wire to connect to supply circuit." and "- CAUTION: To reduce the risk of fire, connect only to a circuit provided with 40 amperes maximum branch circuit overcurrent protection in accordance with the ANSI/NFPA 70 National Electrical Code.".

To be clear it is saying do NOT use with wire thinner than 8 AWG, even if the VersiCharge's maximum current has been dialed down.

Where this can be useful is, say, you currently have only 100a service and your residence's excess electrical capacity is only 20a @ 240v and you want to buy a new Leaf and an EVSE to operate for now at 16a, but you anticipate eventually upgrading your service to 200a. Installing an EVSE like the VersiCharge would allow you to initially install it dialed down to 16a maximum (along with a dedicated circuit using 8 AWG wiring w/ 40a circuit breaker) so you are unlikely to trip your 100a main breaker, and when the service is upgraded, then you can reset the VersiCharge for a full 30a.

This type of EVSE may also be useful if you buy (or expect to buy) more than one EV, and your service can't (or wouldn't) adequately handle multiple EVs charging concurrently at full power.

ishiyakazuo
Posts: 330
Joined: Sat Mar 21, 2015 5:59 pm
Delivery Date: 20 Mar 2015
Location: Chicagoland, USA

Re: EVSE options for 2013+ Leafs

Wed Apr 01, 2015 8:47 am

Yep, that's the exact situation I'm in, actually. I've got 100A service, but the wiring to the load center is 6AWG. I've only got a single car garage though, so multiple EVs probably aren't in my future :)
2012 LEAF SL in Cayenne Red
40 mile R/T commute in Chicagoland
Leaf Spy Lite (June 2015, 22513 miles): AHr = 56.86, SOH = 86%, 393.13V, Hx = 73.55%, 924 L1/L2s, min/avg/max = 4.080 4.097 4.109 (29mV)

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