I was in a supply house and two electricians were discussing the proper way to ground a generator, IMO both were wrong. One wanted to ground the neutral at the generator (2 pole ATS 240/120 single phase) and drive a ground rod, the other electrician wanted to isolate the neutral at the generator and attach it to two ground rods (he adamantly insisted the NEC requires two ground rods). I explained what I feel the NEC requires, both gave me a look like, are you stupid, especially when I attempted to explain the the purpose of a ground rod. They both shook their heads and one walked away and said something derogatory about how stupid I was. The other guy said the generator would not operate properly with the NEC REQUIRED ground rods. After a few drawings and trying to explain what I feel would be correct, I did what I should have done in the first place (I guess) and said sorry to have interrupted your conversation, take care and I left.
Is it wrong to try and help (educate) electricians? Or is it better to just mind your own business.