You bring to mind a point that I have not seen made in this forum. Since there may be folks new to EVs reading these pages, I want to put out a tip that all you veteran EVrs know:
Simple cord adaptors of the type used in the RV world will not work with your EVSE. I watched a you-tuber try that and was stranded when it did not work. Tagging a 20a 110 adaptor cord onto the end of your 14-50 EVSE plug will just result in the breaker blowing.
The amount your EVSE draws must be able to be adjusted to match the max draw from the outlet being used. Tesla sells one for $200 (dirt cheap) that will do this automatically, which is why I recommend them, even for non-Tesla EVs.
actually, that's not at all what would 'happen' it that situation. A breaker only 'blows'(trips) when it's internal heat gets to a certain point(meaning that the wire leading to it is at a certain temperature)... that's it's job.
If you plug in a NEMA 14-50 'plug'(male end from the EVSE) into a 50amp to 20amp 'adapter', whether for an RV or anything else, the adapter allows the flow of power with no issues.
I'm not sure what 'type' of adapter, plug, breaker, or wiring that this 'you-tuber' was using, so suggesting that simply because one 'you-tuber' may not have known the correct way to access power might not be a good example of why 'not' to use adapters. Adapters are not the problem...owners are.
An adapter simply changes what 'size' outlet you are moving from/to with power, such as from a 120v 20amp household female outlet to a NEMA 14-50 RV or EVSE male, or if you are moving from/to one Voltage to another, such as from 240v to 120v. The main difference is whether the adapter uses BOTH 240v hot wires.
The 'sizing' of an adapter can certainly come into play, as to whether it is sized for a 20amp usage, or 15amp usage, etc., but the adapter itself is simply creating a way to combine two different outlet types.
Yes, you are right on when it comes to MANAGING how you are using your adapters, or your OUTLETS...
so, using a correct sized Adapter to connect your EVSE to an outlet is important, but it does not require some special 'tesla' adapter(which, by the way, is COMPLETELY overpriced and unneeded). You just have to know that your adapter is capable of the amount of Amperage(HEAT) that the run of wiring, and the outlet, is going to provide to the truck during charging.
An adjustable EVSE is the perfect solution to this problem. I am using one RIGHT NOW, to minimize tripping of a campground's breaker, while charging at 240v 16amps rather than the higher 240v 32amps.
Don't confuse 'RV Adapters' with something 'less than' proper for any type of adapting situations, they are not built any differently or any 'less than' others. The term 'RV' is just to suggest that these are used mostly in camping electrical situations - but can be used ANYWHERE an adapter is needed. I use MANY OF THEM.
:50a to 20amp adapter
, both a Puck type and a Dogbone type, used to power the Camper while towing
:50a to 30amp adapter
, dogbone type, if even needed with only a 30amp 120v outlet available
:DUAL 30amp to 50a 'Y' adapter
, used successfully to create 240v power to the EVSE at a campground
:30a to 20amp adapter
, both a Puck type and a Dogbone type, used when needed for Camping with only 20amps
all these work just fine, whether when camping or when EVSE Charging...