Using 10-30 outlet with extension cord for mobile charging

Yes. Sometimes it’s worth replacing the outlet if it’s really old.


No

I've been doing this same thing for 5 years. I find the extension cords I've gotten off of Amazon aren't the best. They last longer if I don't charge at 48 amps so I usually charge at 24 amps now

That’s an Australian outlet. Can tell because it’s upside down.

I’ve been doing this for 4 years with the same cheap Amazon extension cord. No issues

No. Just my phone took it like that. It’s US

Damn that’s a lot lower! How long does it take you to charge from 20% to 80% on 12A?!?

What cord did you buy

I use a 50 foot from a 10-30 dryer outlet to my mobile charger. Works great.

I use this one. Had it for about a year. https://a.co/d/cHbrriM

[deleted]

I dont know off the top of my head since I keep a much lower state of charge these days

I'm looking for the brand or a link. The ones I buy off Amazon don't last but a year

That really defeats the purpose. Just charge on 120 then

https://preview.redd.it/8twvn2bsdn8g1.jpeg?width=1320&format=pjpg&auto=webp&s=a9c7189f8965c718a3c0b7cf3e47617c9d1d7539 This will give you an idea of how long it’ll take. 16 hours gives me 25% at 12A.

Does it make a difference if it’s running 25 or 50 ft?

Yeah I had the amps wrong I just realized

Yes, it will be fine. I charge at 220V, 16A on a 20A circuit and I can get from almost empty to my usual 80% overnight with time to spare. Just looking at Amazon, almost all of the 10-30 extension cords are 10 gauge. I see some 25' 8 gauge, but only a few. TBH, connector quality is going to be more important than wire gauge. I'm old and a EE and a DIY type and I've looked at a lot of extension cords gone bad. It's never the cord, it's always the connectors - mostly from mechanical strain, but sometimes from poor connection. Sure, there's resistance in the wire and at high current the wire gets warm-ish. (don't put it under the damn carpet!) A longer wire of the same gauge gets to the same temperature - just over a longer distance - all that heat is energy that you are paying for that isn't going into the car. But, the real issue is connector quality - the manufacturing process has to connect the wire to the pins of the connector and, if it's a little not right, there's a concentrated bit of resistance there and a concentrated bit of heat and, long term, a failure of the plastic of the connector. Buy your extension cord, don't cheap out, but, it's all Chinese anyway... Use it. Feel the cord when the car has been charging for an hour - warm, eh? Now, feel the connectors, both at that wall outlet and where your mobile charger is plugged in to the other end. Same temp or a little cooler? - good to go. Much warmer than the cable? - send that extension back and buy a different brand. You might find that you don't need 24 Amps to get to the charge you want before electric rates go back up in the morning. You can turn it down in the app - better for the car's battery, a bit safer for the cord (but, seriously, you're already at only 24A on a 30A rated cord...).

This had me giggling on the toilet

I wouldn’t think so, I run at 24 amps or about 5 kWh.

With an extension bought from Amazon half way into charging session the charge drops to half due to the control plug overheat solution is use fan to cool off

Not a smart idea but if ya do it keep the amps turned down

What is smart idea to do? Have electrian and get 14-50 outlet ?

🙃

Yessir but dint daisy chain and use no adapter just change the plug on the mobile charger. Minimize connection points and youll be good!

120 is only 12 amps believe me 12 to 24 is 6 times faster lol I just upgraded from 1kwh to 6 so. No dont use 120

At 50 + you start to lose power a bit but up to 50 youre pretty good

Thanks

Me two

Same toilet?

Brit here. We have the same socket for all purposes - phone charger, TV, vacuum cleaner, microwave, tumble drier, car slow charger - all the same. They're all earthed and all provide the same voltage. I'm always baffled when I see the wide variety of other sockets. The one in your photo intrigues me the most; I gather it's a high (normal to me) voltage socket used only for drying clothes and charging cars?

Yes have an outlet installed close to where you will charge The extension cord is the unsafe part too long and too small gauge big problem Also if that is a dryer outlet it could cause an issue over time an EV outlet is heavier duty for the prolonged time of use since charging can take over several hours

I had a cheaper Home Depot "heavy duty" one melt on me. Replaced with this and its SOLID. Hubbell HBL9450A Straight Blade Device Receptacle, RTP, Industrial Grade, 3-Pole 4-Wire Grounding, 50A 125/250V, 14-50R. Not worth saving $30 and having a fire. [https://www.amazon.com/dp/B00EN9VO7W](https://www.amazon.com/dp/B00EN9VO7W)

Yes. I’m actually Turkish and we don’t have those kind of different outlets very common in Turkey if I remember correctly.

I do it all the time. I have an extension cord 25ft thicc boi. Use Tesla' mobile charger adapter to go to 10-30. I set charging amps to 24a (80% rule). No problems in over 10+ years. Used on a 13' Model S and 26' Model Y.

No, Tesla, and virtually every other EV maker, explicitly says not to do this because of shock and overheating risks.

It’s fine. Just check the temp of the extension cord after a few hours. If it’s a little warm it’s fine. If it’s hot lower the charge rate This isn’t rocket science. And it’s not gonna blow up the second you plug it in. If there’s a problem it will let you know.

This is an Australian Redditor. I can tell because he’s upside down.

It originally was 12 my guy. I can’t help the edits. my point was just use a 120 if you’re limiting it to 12 amps. You don’t need a 10-30 nema or such

Sorry yeah we were taking shifts for the past week, someone had to manage the giggleshitter for Christmas