Am I getting this right, in California, the home of regulation, you can remove the busbars of a UL listed meter/main and add lugs and your own unfused service conductors out to an ATS then feed back in to the main breaker?
The load side of an MCB is not “unfused”, if what you mean by that is “lacking overcurrent protection“.
Here is a pic of one I bid the other day.
Yes, we will remove those two bars below the MCB, attach terminals to conductors, and run them to an ATS.
Then out of the ATS back to the panel, and terminals to the bus holding the breakers.
Do you install a lot of standby generators? If so, are you saying that for every one you do, you will do a panel changeout for a panel that has a main with no distribution and factory feedthrough lugs?
Im not saying there is anything wrong with that, I'm just surprised if that is how generators are installed everywhere but here.
Im also a bit bewildered as to why manufacturers are manufacturing SE-Rated ATS, if no one anywhere but me is doing line side taps? (Separate issue I know).