I doubt you could find any EVSE that was certified to use both AL and CU. The electrician you originally used didn’t know what he was doing, but unfortunately that is all too common.
The real world experience is that you drive as fast as possible, resulting in lower SOC, which allows you to charge the fastest on high powered fast chargers. All you need to know is that fast DC chargers can give you 300 miles or range in an hour. As long as you don’t drive faster than 300 mph...
Incidentally, @Rickmc posted a link to an EVSE that uses a 6-50 plug instead of a 14-50 plug. It is slightly cheaper installing a 6-50 plug since it requires one less wire, and, as Rick showed, you can buy EVSEs that use 6-50 plugs. The only reason to use a 14-50 plug is that it can also be used...
To be accurate, any outlet that will be used by an EVSE (car charger) needs to be GFCI protected. It is to prevent a shock in case someone who doesn’t have strong fingers tries to pry out the 14-50 receptacle and reaches around the plug to accidentally touch the blades.
Many people don’t bother...
Correct, you were probably drawing 32A. You should have dialed it down to 24A. Breakers aren’t digital devices, they usually trip based on heat build up. People are used to them tripping based on shorts, and in those cases, they trip right away, but for slightly above rated current, they can run...
Personally, I’d use the Rivian portable charger. second choice would be to wire in a 14-50 pigtail into the Rivian Wall Charger, but you are right that isn’t recommended (but it’ll work!).
If you dead set on buying a dedicated EVSE with a 14-50 plug, there are many to choose from. Make sure to...
We need even more info. You’re using the portable charger with what adapter? The 120V one or the 240V one? Plugged into what kind of receptacle and breaker?
Who the heck posts to an auto forum that they've sold their car as their first post? Unless this guys posts again, treat it like a troll post and ignore it.