l6sman wrote: ↑
Fri Dec 25, 2020 11:25 am
DaveinOlyWA wrote: ↑
Fri Dec 25, 2020 10:13 am
l6sman wrote: ↑
Tue Dec 22, 2020 4:04 pm
I have a sort of similar question. I had a dryer plug installed in my garage that has 240 30 amp on it. I ordered a charger from SplitVolt that is only supposed to charge at 24v. It worked once but then messed up then next time. They're sending me another one. However, I ordered a 14-50 to 10-30 adapter plug from them to try and use with the Nissan charger that came with my 2020 Leaf. According to the Nissan manual, it charges at a continuous 30 amps. When I plugged in using the adapter it seems to work fine and my circuit breaker didn't trip when I turned on overhead lights or ran the garage door opener. Does the Nissan charger have built in intelligence to limit the amps it charges at? Also, I've heard of people limiting how high of amps their Leaf charges at. Can I do that on my 2020, i.e. limit it to lets 24 amps?
First off; Don't use your setup, its dangerous. You can't run more than 24 "amps" on your dryer connection.
2nd off; I am hoping your testing the garage door opener and whatever else is simply ignorance as there can be NOTHING else sharing that circuit.
3rd off; I use my dryer plug on a splitter with the adapter as well and it works fine one at a time. I use a Clipper Creek 24 amp EVSE.
Well, I'm not using a dryer plug per se, I have a dedicated 30 amp circuit breaker and I installed a new dryer plug off of that. The only thing running on that circuit will be my charger. However, I only have 30 amps total going to my garage. When I set I tested the lights and garage door i was checking to see if they plus the Nissan charger were drawing more than 30 amps because I would assume that would trip my breaker but it didn't. That's why I was wondering if the Nissan charger has some intelligence in it so that it doesn't draw more than is available. The manual says it draws a continuous 30 amps. If that was the case then I would've thought that turning on lights or opening my garage door would've trip the circuit. The new SplitVolt charger only draws 24 amps so it should be fine. I am just wondering about the Nissan charger.
If the circuit to your garage is only sized for 30 amperes total, then there could be enough voltage drop to cause the Nissan EVSE to fail--this would explain why it worked once if the system voltage was a little higher. The Nissan EVSE will allow the car to pull up to 30 amperes continuous so it needs a 40 or 50 ampere circuit. Also, the Nissan unit will shut down with error lights if it determines the voltage is too low. The Nissan EVSE that came with my 2019 will charge the car fine at my house on nominal 240V, but will not charge the car at my workshop on nominal 208V (typically 212 or 213 volts). It appears to be ready to charge with the EVSE plugged in to the 14-50 receptacle and will appear to start charging when the J1772 connector is plugged in to the car, but will shut down as soon as the car starts drawing current (probably because the voltage drops below its allowable threshold). If you have a 30-ampere circuit, then the "SplitVolt" unit which is rated at 24 amperes should be OK to use.
Other posts in this thread imply that the maximum current the car will draw is 27.5 amperes, but that is not correct. My 2015 would draw 30 amperes when charging from a nominal 208V circuit (typically 212 or 213 volts). The current draw from a nominal 240V circuit would vary with voltage (lower current at higher voltage), but I never saw it above 27.5 because the voltage at my house never got low enough to have the current increase above that level. As an example, the last charge before trading in was 26.6 amperes at 243.3 volts. My 2019 draws a little more current than the 2015: 27.6 amperes at 244.2 volts, 27.0 amperes at 246.1 volts, 26.8 amperes at 250.1 volts, or 28.6 amperes at 236.3 volts. The 2019 will draw a little over 30 amperes when charging from a 208V nominal circuit if the EVSE pilot signal will allow. My Clipper Creek EVSE at my workshop garage allows 40 amperes and I saw 30.4 amperes at 214.3 volts the first time I charged there.