Folks need a bit of input. Recently completed an inspection and found a sub-panel with a 3-Wire feed and Neutral / Ground bonded. Of course, I flagged this in the report, as well as multiple other electrical deficiencies I won’t go into. Sub-panel pic attached. The homeowner claims they have consulted an electrician, and I’m incorrect as this does not need to be brought up to code - leave out the comments on that, as I already asked him to have the electrician put that in writing on his company letterhead with license #.
The home was built in 1957. There was an electrical permit pulled in 2007 for a remodel or addition. Am I incorrect in my understanding anytime major electrical is done the system should be brought up to code?
If I’m wrong on this one, happy to admit it and go off on my merry way. However, according to everything I know, have read, and have researched this needs to be fixed.