Not being disagreeable, but going back to ohm's law I find these rules odd. Aside from the temperature and shielding characteristics of the various wires, to me copper is copper and a said size 'should' carry the same current. Here is something I c/p'd from the web that mirrors your comments.
Can 6 AWG carry 60 amps?
60 amp wire size is either 6 AWG or 4 AWG wire (AWG stands for American Wire Gauge; standard wire sizing is the US) for 220V voltage. An amateur will use a 6 AWG wire size for 60 amp 220V. A professional will always use 4 AWG wire size for 60 amp 220V.
I don't want to throw this off. I understand we are only discussing 48 amps max. HOWEVER to maintain the correct percentage of allowable load by most local codes, we would then need a 60 amp breaker. You are saying I only need A if I use B. I get that different a wire type may be more resiliant to certain conditions. No matter what the wire size is, a loose or bad connection will produce heat at the location because it has the same effect as reducing wire size. Bad contact at maximum amperage will always overheat. Overheating is what I want to avoid even if it's more expensive in the end
What the rule you quoted seems to imply is a wire in conduit is safer, therefore it's ok to make it smaller and not worry about increased heat at higher currents.
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Thanks for the correction. I was not aware the internal charging on a Tesla works like this. In the case of my Autel. There is a phone app that connects to it through wifi that lets me adjust incriments in current. The concern for me which might be unfounded is that if I install a 35 amp max setup, someone in the future, or even myself could accidentally set charging to 48 amps causing overheating of the run. Also I wanted to be covered for the future in case the demands are more.
In one post I read, a poster commented Tesla doesn't need a 'smart' charger because the car itself figures it all out, so i seem to have some redundancy in having an adjustable smart charger hooked to a Tesla.
