Thank to your concern and valuable suggestion.Nubo said:blinder said:My car port is right next to my bedroom, and lets assume theft is not a concern. And I am smart enough to know not to run AC and charging at the same time. I also will charge a night when I have very little appliances running. Also assume the landlord is Ok with me running an extension cord from my AC socket to my car port. Can you give me a simple answer whether this set up will work? and it will charge faster than L1? And how long would it take to fully charge?
The electrical code doesn't care if you're smart enough. It requires that a 240V circuit have only ONE load attached. So you need to set this up so that you cannot possibly run both at the same time. Without investing in elaborate switching equipment, that means plugging and unplugging the EVSE and AC. It's important to note that the 240V outlet is not designed for a huge number of plug/unplug cycles. So if you intend to be switching devices daily, this is probably not a good way to go.
I think you also said the 240V circuit goes to a 15A breaker? That seems unusual* but if it's true then very few Level2 EVSE's can be used on it. Most draw 16 amps or more and you're only allowed to draw a max of 12A continuous from a 15A circuit. You'd need an EVSE that can be "dialed down" to 12 or fewer amps.
Running an extension cord across a public area presents a danger to others, regardless of the landlord's opinion, unless you can be sure that there will be no foot traffic/mowing/gardening/etc... And your plan should not depend on getting up early enough to move the cord.
Based on the questions and proposals you've presented I'd strongly suggest you pay for a bit of an electrician's time to talk this over. There are important reasons for a lot of the electrical rules that may seem like unreasonable impediments to you at the moment. Whether or not something will work is not the same as whether or not you should do it. People have successfully ridden over Niagara falls in barrels... It works.
*are you sure the AC is on 240V? There are window units that run 120V. I've not seen a 15A 240V circuit. FYI, 240V circuits go to 2 breakers, or a double-breaker.
I am not an electrician but I am pretty handy with carpentry and use extension cord often. I intend to use a heavy gauge quality extension cord, and place it in safe high place thats away from foot traffic and other interference. My apartment is similar to a two unit duplex, unlike the motel style structure, and the car port is very private, I will not use a splitter, so there will be zero chance of charging and running AC the same time. As for constantly plugging and unplugging, I run my AC only few days a years, so that the charging cord will be permanently stayed on the socket.
So safety in term of elements should be be a concern. I just want to be sure that I know AC draws much energy/juicy, and if the outlet is strong enough for AC, it should be strong enough for L2 charging?....