Successfully Charging with TWO 30amp 120v outlets, for 240v power, at a campground...

[jefro]

(B) Disconnecting Means.

Each multi-wire branch circuit shall be provided with a means that will simultaneously disconnect all ungrounded conductors at the point where the branch circuit originates.

http://mjobee.com/projects&news/nec art 210.4.pdf

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[FlasherZ]

(B) Disconnecting Means.

Each multi-wire branch circuit shall be provided with a means that will simultaneously disconnect all ungrounded conductors at the point where the branch circuit originates.

http://mjobee.com/projects&news/nec art 210.4.pdf

This is not a multi-wire branch circuit.

A multi-wire branch circuit is 2 independent 120V circuits with a shared neutral. They're typically used in homes where 2 independent circuits are needed to the same location, because you can run 12/3 instead of 2 different 12/2's.

So you're using the wrong code citation.

That said, if you want the code citations that address this, there are:

240.15(B): "Circuit breakers shall open ALL ungrounded conductors of the circuit both manually and automatically"
210.7 (requiring simultaneous disconnect of multiple branch circuits that supply devices or equipment)

 

[Adventureboy]

Be careful with this one and similarly priced EVSEs on Amazon, there have been more than a few reports of melting ports and issues with them.

I've been using this one weekly since May and quite like it. https://ev-chargers.com/adjustable-charger/adjustable-current-ev-chargers/
It has a longer cable than most and will run 120v if that is what you give it (adapter needed to plug into a standard outlet). Adjustable on 240v in appropriate steps from 6A up to 40A.

 

[cdherman]

In 2013 I built a 120v+120v=240v combiner using instructions off a nissan leaf forum. Doing it right includes relays that only energize anything once they see 240v. I don't recall the exact wiring. The good ones will cost over $100 at least or closer to $200.

In my case, I also wired in a digital voltimeter. Why? Any drop in voltage over about 3% indicates that some component of the rather Jerry rigged system is NOT capable of the amperage load you are putting on it. So if it reads 240v with no load and then drops below 232 with a load, I would know not to proceed with hours of charging. For instance.

I have never used the device. Tested several times. But never used in a "must work" situation.

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