You would need a 14-30 extension cord such as this:
Conntek RU1430PR NEMA 14-30 Dryer / Range Extension Cords
and the 14-30 adapter for the UMC.
It’s really cost prohibitive for one time use. Better to find a J1772 charging station nearby.
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Conntek RU1430PR NEMA 14-30 Dryer / Range Extension Cords
and the 14-30 adapter for the UMC.
It’s really cost prohibitive for one time use. Better to find a J1772 charging station nearby.
rpo
Member
Not that anyone should do the following, but this is the solution I have ended up using at AirBNBs for the past couple of years now since charging at 120 volts / 12 amps is too slow most of the time and lugging a NEMA 14-50 extension cord is a huge burden due to the weight.
I purchased a 75 foot 10 gauge extension cord from Amazon which was good for 120v/15amp due to the connector being a NEMA 5-15. I promptly cut off the plugs and replaced them with NEMA 6-20s (240v/20amp) which the 10 gauge is easily capable of handling. That bumped my potential wattage through the extension cord from 1,440 watts to 3,600. Now...6-20 receptacles are obviously not common except in hotel rooms (for the A/C/heater), so I made a wide selection of adapters to get from whatever outlet I might find to a 14-50 receptacle. I then use a 14-50 to 6-20 adapter if I need to use the extension cord to get to the car, and then a 6-20 to 14-50 adapter before plugging in the Tesla charger and dialing in the maximum amps that the outlet or extension cord is capable of delivering so nothing gets overloaded.
So instead of charging at 3 MPH, I can now almost always charge at 10-11 MPH which I find is sufficient 95% of the time.
I purchased a 75 foot 10 gauge extension cord from Amazon which was good for 120v/15amp due to the connector being a NEMA 5-15. I promptly cut off the plugs and replaced them with NEMA 6-20s (240v/20amp) which the 10 gauge is easily capable of handling. That bumped my potential wattage through the extension cord from 1,440 watts to 3,600. Now...6-20 receptacles are obviously not common except in hotel rooms (for the A/C/heater), so I made a wide selection of adapters to get from whatever outlet I might find to a 14-50 receptacle. I then use a 14-50 to 6-20 adapter if I need to use the extension cord to get to the car, and then a 6-20 to 14-50 adapter before plugging in the Tesla charger and dialing in the maximum amps that the outlet or extension cord is capable of delivering so nothing gets overloaded.
So instead of charging at 3 MPH, I can now almost always charge at 10-11 MPH which I find is sufficient 95% of the time.
if 220v max should be 11A and, continuous i would not go above 9A
Section de câbles et fils électriques, abaques et tableau de choix
Section de câbles et fils électriques, abaques et tableau de choix
n2mb_racing
Active Member
I've been meaning to get this cord:
Heavy-duty NEMA 14-50R extension cord for Tesla, 20 ft.
Let's you plug into dryer outlets, but not as heavy as the camper cords since it only needs theth conductors instead of four..
Heavy-duty NEMA 14-50R extension cord for Tesla, 20 ft.
Let's you plug into dryer outlets, but not as heavy as the camper cords since it only needs theth conductors instead of four..
No one has even mentioned specifically why that won't work yet. It's not even the same kind of plug.
NEMA connector - Wikipedia
The dryer outlet is a 14-30. That first adapter cable from Amazon you linked to is for a TT-30 outlet, not a 14-30, so it can't even plug in there. TT-30 is for travel trailers at camp sites. You really just need a 14-30 extension.
n2mb_racing
Active Member
RedOctober
Member
Keith can you provide a picture of the 15 30 plug/outlet your friend has that you want to plug into. You would think it’s fairly simple but there are various configurations depending on the wiring to the 15 30 plug/ outlet. Can it be a 14/30 or something else? Then you can purchase the extension cord that will be suitable for 30 amps. The longer the cord, the more resistance which requires a larger gauge extension cord. What are you using at home for daily charging? Do you have a Tesla charger?
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That’s a NEMA 14-30 outlet. As I posted above, those extension cords are very expensive. Isn’t there a J1772 charging station anywhere in town? That plus 4 mph charging overnight with the 120V outlet in the garage may be your best option.
RedOctober
Member
Thanks for including the picture. Thats why I was asking for one because they are similar but actually different. The extension cords for those are expensive. Research the Tesla forum, which is different than this site. Lots of information on adaptors. You may just have to use a heavy duty extension cord into a 120 outlet. They have worked for me when I had nothing else I could use over a weekend in the middle of nowhere. Good luck.
The easiest thing to do is to buy a NEMA 14-50 extension cord (https://www.amazon.com/Camco-Extension-PowerGrip-Convenient-Carrying/dp/B0024ECIP0), and a 14-30 to 14-50 adapter (NEMA 14-50R to 14-30P/14-50P/14-60P Universal Adapter). You’ll then have to manually dial down the amperage to 24A when charging.
n2mb_racing
Active Member
This is cheaper and lighter than the camco. I'd recommend this instead
Heavy-duty NEMA 14-50R extension cord for Tesla, 20 ft.
Heavy-duty NEMA 14-50R extension cord for Tesla, 20 ft.
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