I was not present. For convenience (Lol) this was installed as part of a larger solar project. My point being the contractors were at the house for 4-5 days.I am not blaming you on your choice of electrician and you said many times of the limited choices. I get it...
My only question was, were you even present at the time of installation or did the electrician come while you were at work and they had access to the electrical panel and all they need without you being present and completed the job but you were not able to test the connection?
I will put it this way, when the electrician went to install the NEMA 14-50 plug in my house, I was there and present during the whole process and made sure I was able to charge my car before he left even if they were in the process of packing up.
I should have specified that I want to be present during the wall connector install and do a test charge. But I didn’t, and they installed it whenever they did.
Good news is the solar and battery system is working nicely.