I Just did it to the cord on the wife's car, its 24.5 C
How much extension cord is too much?
- Thread starter AZjeff
- Start date
I Just did it to the cord on the wife's car, its 24.5 C
Over ambient?
Are people seriously still thinking that EVs blowing up or burning up is a daily occurrence?
We’ve been charging cars on extension cords for years at home and never had a problem. BUT I use an expensive thick heavy duty extension cord not regular ones.
Also Teslas show input voltage and will automatically limit charging current if it detects too much voltage drop.
No, it would not be carrying DC. The EV does the AC-DC conversion internally.
On topic, I think this guy is fine as long as the cable is sized appropriately, or running at a lower amperage for a smaller sized conductor. As someone else mentioned a NEMA 6-20R is ideal, 16A at 240V is about 3.8KW, with charging losses net rate to the battery would be around 3.3-3.4KW.
The right equipment for the job which is what you've done. I also did something similar. I got an extension that attaches to the connection that goes to the car so that the EVSE could be mounted on the back wall of the garage and still reach both vehicles.
The only real concern is someone trying to do this with a light or medium duty cable and unfortunately people do dumb things at times.
A straight cord like that can dissipate a lot of heat, and it is better if it's 240V, as even a 100' cord won't drop the voltage enough to matter, and the heat produced is like 1 watt/foot. That could be a problem with a 100' cord coiled tightly in a insulated situation, then it could start to heat up the cord. A 120v long extension cord is more likely to cause issues due to voltage drop and more heating.
We have something like a 240' run to our submersible 220V 1hp well pump and its not heavy wire. 14g I believe. Running the same distance on 110V would've required some large gauge very expensive wire, as I was thinking about being able to run the well pump with a small 110V inverter generator, but voltage loss and resistance gets too much at that distance.
We have something like a 240' run to our submersible 220V 1hp well pump and its not heavy wire. 14g I believe. Running the same distance on 110V would've required some large gauge very expensive wire, as I was thinking about being able to run the well pump with a small 110V inverter generator, but voltage loss and resistance gets too much at that distance.
About 3 c.
