Right now I am running a heavy gauge extension cord from the back of the garage to the front and charging with the OEM Level 1 charger. I want to get away from using the extension cord so I'm going to add another circuit to the breaker box, and run the wire and add an outlet at the front of the garage. I know I need a 15 amp GFCI. I was thinking I might go with a 20 amp so that I can have the option of plugging something else if needed but I haven't priced out a 20 amp breaker yet. But since I was going to run wire, I thought I might as well run something heavy enough so that I can change the circuit over to 220V later in the future so I can update to Level 2. So for Level 2, what kind of amperage am I looking at? And how heavy wire should I get. I was thinking 10/3 or 10/3 with ground should cover anything I might upgrade to in the future. Any thoughts or advice?
I have 8 gauge wire running to a 220 plug in the garage for my Clipper Creek L2 charger. As for your 110 line I'd put in a 20A plug, simply because it may be needed for power tools. But to answer your other question 10 should be fine if you want to cover up to 30A. Course that depends on the length of the wire too. But if its for a Prime/Volt/Energi, more than enough
I always run 3 conductor with ground to have the option of 110v outlet in the future. 10ga is not heavy enough for Level 2, which uses up to 32 amps. You can run an 8ga 3 cond. with ground to a subpanel, and also have a 110v outlet- being careful to not exceed the wire's current capacity, nominally 40 amps.
i have 10 ga. because the pip can't pull many amps. if you want to plan for another ev in the future, and running new wire again would be a pain, then a lower gauge would be a smart move. mine is a clean run in the open absent to the garage wall.