broosth
Posts: 16
Joined: Sun Aug 19, 2018 4:32 am

Level 2 charger

Wed Sep 12, 2018 5:08 am

Any opinion regarding level 2 home chargers? Wirecutter.com likes the Siemens unit. Are there any good ones that are BOTH level 1 and 2? I don't want to pay for a 240v line to my carport, but a permanently mounted charger seems like a good idea. I spoke with a friend who had is charger stolen out of his driveway!

One related question: does anyone know the max charge rate for a level 2 charger?

TheCyberKnight
Posts: 15
Joined: Thu Aug 09, 2018 1:01 am

Re: Level 2 charger

Wed Sep 12, 2018 11:20 am

For the related question, a level 2 charger usually pushes about 7.2 kW where a level 1 is limited to about 1.4 kW.

WetEV
Moderator
Posts: 359
Joined: Sun Jan 03, 2016 1:26 pm
Location: Near Seattle

Re: Level 2 charger

Wed Sep 12, 2018 1:43 pm

broosth wrote:Any opinion regarding level 2 home chargers? Wirecutter.com likes the Siemens unit. Are there any good ones that are BOTH level 1 and 2? I don't want to pay for a 240v line to my carport, but a permanently mounted charger seems like a good idea. I spoke with a friend who had is charger stolen out of his driveway!

One related question: does anyone know the max charge rate for a level 2 charger?


J1772 is limited to 80Amps or 19.2kW for L2.

The Bolt is limited to 7.2 kW.

The lowest of the car's charger and the station's specifications limit the total.

7.2kW is the most common, however many public stations are 208V 30 Amp or 6.240kW. There are lots of others, some stations I have used a few times are 208V 20A or 4.160 kW.

L1 is usually 12A 1.440 kW. L1 can be 15 Amps or 1.920kW on a 20Amp circuit.

https://en.wikipedia.org/wiki/SAE_J1772

Somewhat off spec, some charging cables and some cars can use an RV outlet TT30 to charge at 24A 120V which is 2.880kW.

I have a Siemens, and am generally pleased.
#49 on the LEAF 100 mile club.
Most everything around here is wet during the rainy season. And the rainy season is long.
2012 Leaf SL Red
2014 Leaf SL Red
Can't sit in a Bolt seat, hoping for better soon.
Or perhaps a Buick version? Buick Electra 225???

GetOffYourGas
Posts: 1088
Joined: Tue Oct 20, 2015 5:25 pm
Location: Syracuse, NY

Re: Level 2 charger

Wed Sep 12, 2018 2:25 pm

WetEV wrote:
L1 is usually 12A 1.440 kW. L1 can be 15 Amps or 1.920kW on a 20Amp circuit.

https://en.wikipedia.org/wiki/SAE_J1772

Somewhat off spec, some charging cables and some cars can use an RV outlet TT30 to charge at 24A 120V which is 2.880kW.


Does anyone know the maximum current the Bolt can pull from 120V? I would guess 12A based on the 8A/12A settings in the infotainment screen. But it sure would be nice to pull up to 24A from a 30A RV outlet.
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV (traded for Bolt)
2015 C-Max Energi (302A package)
2017 Bolt Premier

SeanNelson
Posts: 1357
Joined: Tue Jul 05, 2016 2:43 am
Location: Vancouver, BC

Re: Level 2 charger

Wed Sep 12, 2018 7:00 pm

GetOffYourGas wrote:Does anyone know the maximum current the Bolt can pull from 120V? I would guess 12A based on the 8A/12A settings in the infotainment screen. But it sure would be nice to pull up to 24A from a 30A RV outlet.

12A is the maximum on 120V. But if you make an adapter for the EVSE ("charge cord") that comes with the Bolt then you can plug it into a 240V outlet and it will charge at 12A - which is the same amount of power you'd get from 120V at 24A.

BarfOMatic
Posts: 49
Joined: Sat Feb 25, 2017 8:03 am

Re: Level 2 charger

Wed Sep 12, 2018 7:30 pm

broosth wrote:Any opinion regarding level 2 home chargers?


There are many, many threads on the subject of "which EVSE should I buy" ? (most of them in the "charging" area of this site)

For example (there are others) :
viewtopic.php?f=12&t=7760

viewtopic.php?f=12&t=7272

viewtopic.php?f=12&t=6770

viewtopic.php?f=12&t=6086

Lastly, there are some Bolt owners that have a pigtail ("very short extension cord") that allows them to use the default OEM EVSE that Chevy delivers with a 240V socket, turning the EVSE into a 240V/12A (i.e., ~2.8 kW) charging solution. You can search for info on that here as well.

GetOffYourGas
Posts: 1088
Joined: Tue Oct 20, 2015 5:25 pm
Location: Syracuse, NY

Re: Level 2 charger

Wed Sep 12, 2018 7:35 pm

SeanNelson wrote:
GetOffYourGas wrote:Does anyone know the maximum current the Bolt can pull from 120V? I would guess 12A based on the 8A/12A settings in the infotainment screen. But it sure would be nice to pull up to 24A from a 30A RV outlet.

12A is the maximum on 120V. But if you make an adapter for the EVSE ("charge cord") that comes with the Bolt then you can plug it into a 240V outlet and it will charge at 12A - which is the same amount of power you'd get from 120V at 24A.


Yes, I am aware of this trick, although I refuse to do it myself. If that adapter falls into the wrong hands, bad things will happen.

I was asking because of the availability of 30A RV outlets. I have a family member or two that has one installed and I'd love to take full advantage of it when I visit.
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV (traded for Bolt)
2015 C-Max Energi (302A package)
2017 Bolt Premier

tomofNV
Posts: 7
Joined: Thu Sep 13, 2018 5:31 pm

Re: Level 2 charger

Thu Sep 13, 2018 5:38 pm

You can charge from a 30A or 50A outlet, but you will need a portable EVSE and the correct adapter plug (30A dryer) to do so. You can get both at:
https://emotorwerks.com/store/residential
For those of us that travel to areas with no public EVSE the above permits charging at RV parks.

WetEV
Moderator
Posts: 359
Joined: Sun Jan 03, 2016 1:26 pm
Location: Near Seattle

Re: Level 2 charger

Thu Sep 13, 2018 10:29 pm

tomofNV wrote:You can charge from a 30A or 50A outlet, but you will need a portable EVSE and the correct adapter plug (30A dryer) to do so. You can get both at:
https://emotorwerks.com/store/residential
For those of us that travel to areas with no public EVSE the above permits charging at RV parks.


30 Amp RV is a "TT-30", which is 120V 30 Amps. It is NOT a 30A dryer.

Some cars can charge at higher rates than 1.440kW on 120V if the EVSE advertises more. Some cars do not. I don't know about the Bolt.
#49 on the LEAF 100 mile club.
Most everything around here is wet during the rainy season. And the rainy season is long.
2012 Leaf SL Red
2014 Leaf SL Red
Can't sit in a Bolt seat, hoping for better soon.
Or perhaps a Buick version? Buick Electra 225???

tomofNV
Posts: 7
Joined: Thu Sep 13, 2018 5:31 pm

Re: Level 2 charger

Fri Sep 14, 2018 1:40 am

The 30A outlets I used to charge at RV parks 5-9 years ago in my converted car were 240V, verified by my energy meter which reads out AC voltage, current, power, and accumulated energy. I don't know much about RVs themselves.

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