Length of mobile charger

THEsocalledfan said:

From watching those state of charge videos, the adapters are only a bit more than a foot so not much more from the 20' mentioned above.

This brings up another question for me. It is better to buy an NEMA 14-50 extension cord or a J1772 extension cord?

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THEsocalledfan said:

I've already found a nema 14-50 cord that should be safe. See:

Amazon.com

I have not researched this one like above, but here is a J1772 extension cord:

Amazon.com: Inteset 21ft 40amp J1772 EV Extension Cord, Made in USA - for Electric Vehicle Charging Stations, Carrying Bag, Ultra-Flex Cable, UL Listed Parts… (21 Feet) : Automotive

Buy Inteset 21ft 40amp J1772 EV Extension Cord, Made in USA - for Electric Vehicle Charging Stations, Carrying Bag, Ultra-Flex Cable, UL Listed Parts… (21 Feet): Charging Stations - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

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THEsocalledfan said:

For me, I have parents and in-laws with their dryer outlets near their garages; hoping to park in their garage, and charge on their dryer outlet using something like this....

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Leaf to Lightning : ) said:

I'm coming from many years in the RVing world too, and still own 3 campers, us and two of our boys at college on their own RV lots. Our former motorhome was 50amp 240v and our current campers are all 30amp 120v.

This is where the fun begins: when you have a 50amp motorhome, with two roof air conditioners on 20amp breakers for each, a large Inverter/Charger, and all the interior amenities, a microwave especially. We learned over a very short period of traveling that having MANY different adapters and extension cords was key, when a 50amp outlet was not available.

Although, I'll admit that even now I realize that EV charging is different. The main change is that motorhomes don't necessarily pull 50amps on both legs of 240v power at the same time Continuously, or rarely do, if ever, but the mobile EVSE does draw continuously, at least at 30amps. The heat generated in the wiring can certainly be more pronounced and prolonged, and therefore would make one more cautious to the extensive use of 'extension cords' and additional in-line junction boxes and female and male plugs. Of course, there are times when it makes sense, I'll use one at one of my son's camper sites since I won't be able to park close enough for the EVSE cord to reach, but that's not a long-term solution.

I think Ford is smart to use the NEMA 14-50 as the go-to outlet. It is designed for 50amp 240v service, and designed to 6/3AWG wiring, suitable for 50amps of continuous load. While the EVSE will only be close to 30amps on each leg, this gives breathing room for the heat to dissipate easily and never be a concern.
In another situation, I might use an existing 30amp double-pole breaker in a pinch, or for a temporary solution via an existing DRYER outlet. It's also not a long-term thing, though it make work just fine, especially if the outside temps are not already adding to the wiring's own ambient temperature.

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