Are many AHJ's satisfied that the protection is there and don't care about the testing? Or is it just getting done by the EC at some point when I wasn't around. I've seen them trip a few times as soon as the gear is energized because they're still set to some minimum level. And then usually somebody turns it up until it stops tripping.
In some cases AHJ's don't even inspect gear when it's live as they inspect before power is even supplied, as they are the ones that give the go ahead to have the POCO hook up, as I said in some cases, some areas they do, but in most states they are not in the liability chain when something goes wrong either, you can have a code compliant install and things can still go wrong.
Now the part of just turning the dials till it stops tripping, well all I can say is your company has been lucky or you would not be here asking these questions, the whole reason the NEC requires a GFP on services above 1k amps with more then 150 volts to ground is even conduit has its limits on how much fault current it can handle, if a person or worker was to accidentally cause such a fault and the GFP was not properly tested and or set to high, this fault can cause an arc flash that could seriously injure or kill a person, now when the layers hire the forensic investigators and find that there was never a true commissioning of the gear or that the right settings were never obtained for the GFP or was it tested, who ever made the choice of just turning the dials up till it stops tripping as well as anyone else in the chain of liability including the poor electrician who just did what he was told to do because he didn't know better, will all have a part in the wrath of the judge as responsible parties, even signing a liability release is no good as you can not sign off on liability, also remember criminal charges can and has been brought against workers in many areas across America, I know of a few electricians sitting in prison for the mistakes they made with charges of man slaughter against them because they did what they were told to do, and it caused a death.
Setting the dials is a job for an engineer that is trained and qualified to know the system and wiring and what setting the dial must be set at, as I said before most electricians would not have the qualifications to make these settings, and even if an engineer told me what to set them at I would not be the one setting them as I would politely tell the engineer that since he is the responsible party I can not become part of that responsibility, you also need to think about this when you yourself gets involved with making choices to do some of the work yourself, how will you be held accountable if something were to go wrong?
Now I don't expect you to take my word or anyone else here for that matter, but it is up to you to find the truth for yourself, a good start is talk to your insurance carrier, talk to a good injury lawyer, find out because the law can and will hold you responsible because ignorance of the law is not an excuse as it is up to you to learn what you can or can not do, don't wait till it happens as that is always too late, have one serious accident happen and you will wish you would have taken the time to protect yourself and learned the above, don't just keep doing things because in the past you manage to come out ok, because all it takes is one time and your life as well as the life of the ones you love will never be the same.
I have had to many time turn down helping out a customer who might ask me to hook up a dryer or a washer, you would think what would it hurt as it would save my customer paying someone else they would have to hire to do it, but when it comes down that if that gas pipe was defective or water hose, my liability insurance would not cover me doing work outside my scope of work, and this poor customer if some one were injured or killed would not help me as they would also be fighting their own battle from being included in the same lawsuit, it is a chance I can not or will not take, as I can loose everything I have worked so hard to get over just trying to be nice.
I didn't want to sound so harsh, but you are here because you do not know, you have made statements that lets me know you do not understand the chain of liability, this is why you need to do the research to find the truth as I pointed out above, before something does happen, I myself have done this because I don't want to find it out sitting in front of a judge, when its too late to make a change, remember when an electrician touches something he is not qualified to set, then he becomes part of the liability chain. and their is no paper work that can remove this liability NONE!
After 37 years in this buisness, I have heard all the "oh can you just adjust it till it don't trip" or "Can you just remove the GFCI because it keeps tripping on the outside christmas lights" Nope, Nope, and Nope!!!
Sorry, but Welcome to the forum