Ok 90% of wiring problems come from Hacks and DIY, however, this last week:

Monday: We arrive at job, no power, after checking, we find service conductor at main breaker open, after checking we find they spliced the service conductor in buried pipe, first clue was rigid conduit on one end and EMT on the other, yes buried EMT, so we asked the owner if he knew who did this job, yes let me get you the invoice, well it happened to be a well known area EC, and one that complains about hacks, doing business in his area.

Wednesday: Service upgrade estimate, we get there, look it over, give estimate, oh that is too much Mr Other EC said he can do it for Less, and there is no need to change the meter pan, and he said i don't need any additional grounding or bonding, and another thing He said you don't need a permit for this, Mr Other EC is another one that complains about Hacks working.

Yes most of the dangerous work does come from DIY's and Hacks, but there is some coming from within the trade.