jjeff
Posts: 1689
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: Level 2 Home Charging Question

Sat May 26, 2018 12:22 pm

I don't believe the Square D QO panels support 240v single slot breakers, none of the slots. As said before, you can use what they describe as single pole tandem breakers, which again will free up space in your panel to allow you to use the double slot dual pole or 240v breakers.
Not sure if this search results link will work but if not I simply searched amazon for "QO breakers" and up popped up what I ended up with.
https://www.amazon.com/s/ref=nb_sb_ss_c ... C0EXGGJ692
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

smkettner
Posts: 7151
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: Level 2 Home Charging Question

Sat May 26, 2018 1:13 pm

Again.... worst case you get a small surface mount subpanel. No need to upgrade the main panel.
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

Jerryr
Posts: 15
Joined: Mon May 14, 2018 8:18 am
Delivery Date: 14 May 2018
Leaf Number: 307113

Re: Level 2 Home Charging Question

Sat May 26, 2018 3:10 pm

jjeff wrote:I don't believe the Square D QO panels support 240v single slot breakers, none of the slots. As said before, you can use what they describe as single pole tandem breakers, which again will free up space in your panel to allow you to use the double slot dual pole or 240v breakers.
Not sure if this search results link will work but if not I simply searched amazon for "QO breakers" and up popped up what I ended up with.
https://www.amazon.com/s/ref=nb_sb_ss_c ... C0EXGGJ692


Exactly what I had to do on my Q0 panel at home. I ran out of spaces. So I bought a few twin aka tandem breakers to free up a few slots so I could install a 40 amp double pole breaker for the EVSE.

Works great.

Zugzwang
Posts: 9
Joined: Thu Apr 19, 2018 5:54 am

Re: Level 2 Home Charging Question

Mon May 28, 2018 7:06 am

MikeD wrote: [A Tesla Poster MikeD found wrote:] "If you search this forum for melted UMC connectors, you may have your answer to your question ["New UMC 14/50 limited to 32 amps... WHY?!"] on the power reduction. The previous generation of UMC was designed in such a way with the removable plugs that you could get a poor connection. Coupled with a 40 amp output, that was a recipe for overheating. How many times were the plugs recalled and redesigned? Twice? That's some serious liability to sell a product that has heating/melting issues like that...I haven't seen the new generation unit yet, but I'm betting it runs cooler, and isn't prone to coming out of the wall receptacle as easy, etc... ".

I believe Nissan has avoided these issues with its portable EVSE designs, especially by apparently including a mechanism for detecting excessive temperature at the input plug and automatically reducing its EVSE's maximum current draw and/or shutting down with an appropriate light fault code. This is a major reason for my recommending only unaltered Nissan portable EVSEs for 2018 Leaf buyers who want just an L1 to carry with them.


Interesting note about the temperature sensor! Thanks for that. Does anybody know more about this? I have been reading posts suggesting a Level 1 charger can be a fire hazard. Does this feature of the 2018 L1/L2 combo EVSE mean that level 1 charging from a standard outlet (a NEMA 5-15 120V) is "safe". I use quote marks as I gather safety is relative to one's personal electrical set-up. A slower charge or a shut down with a fault is unfortunate but something that can be dealt with. A garage fire is a much bigger issue. I'll take a look through the manual and see what I can learn.

MikeD
Posts: 655
Joined: Thu Jun 24, 2010 6:14 am
Delivery Date: 12 May 2011
Leaf Number: 592

Re: Level 2 Home Charging Question

Mon May 28, 2018 8:30 am

Zugzwang: See pages CH45 and CH46 of the "2018 LEAF Owner's Manual": For a particular Fault light explanation: "...When the temperature of the electrical plug is too hot or the EVSE is unable to detect the temperature of the electrical plug. The EVSE is restricting the charging current for safety according to the temperature of the electrical plug. ...etc". All Nissan Leafs since 2013 have similar documentation, so it didn't just start in 2018 MY.

The Nissan's L1 EVSEs all document a maximum draw of 12a which is, for example, less than many hair dryers -- which to my knowledge don't monitor their plug's temperature.

User avatar
davewill
Posts: 4926
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: Level 2 Home Charging Question

Mon May 28, 2018 10:06 pm

What makes 120v charging problematic is old, poorly maintained or overloaded 120v circuits. If your circuit and outlet are in good repair, there's no problem.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

Zugzwang
Posts: 9
Joined: Thu Apr 19, 2018 5:54 am

Re: Level 2 Home Charging Question

Tue May 29, 2018 4:54 am

Thanks guys! I'll be checking those manual references. (This board is awesome)

Onbypass
Posts: 4
Joined: Mon May 07, 2018 8:13 am
Delivery Date: 02 May 2018

Re: Level 2 Home Charging Question

Thu May 31, 2018 7:31 am

Just wanted to add my experience.........

I've had my 2018 leaf for a month now. Originally, I was just going to stick with the 120V Level 1 option. However, being that 240V Level 2 seems to be at least 4 times faster, I decided on that option.

It's awesome that Nissan provides a charging solution that negates the requirement for a charging station. (Providing that you have the model and/or options that include the cable!!!)

I am lucky that:

1. I have a newer home with a 200 amp panel
2. The panel is located outside, on the garage wall!

So, the electrician installed the 14-50 receptacle in the garage wall, and ran around 1 foot of the thickest cable I've ever seen, to the breaker box. There, he installed a 50 amp breaker.

Haven't received the bill yet, but the quote was a maximum of $225. I've used him before, so I think it's actually going to be a little bit cheaper.

I think that for $200, the convenience of the L2 charging is well worth it.

Looking forward to seeing pics of the new LEAF!

User avatar
davewill
Posts: 4926
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: Level 2 Home Charging Question

Thu May 31, 2018 5:49 pm

When you factor in that nearly a third of the power from a 120v charge goes to cover overhead, it's more like 6 times faster!
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

Return to “New Members & Newbie Questions”