PVC with aluminum conductors
I'm pretty sure the neutral is correct. He couldn't mis-mark that one, it's got the stripe on it. I did look in the meter can and I'm almost certain it was correct. I will check again in the morning. Probably even remove the neutral from the lug and check again.
thats strange the only time i have ever seen a wire (neutral) with a stripe on it is in SER, wonder if he had some extra stripped it out removed the bare and used the rest, (that even legal?) i'm still scratching my head over your continuity issues, i use GE all the time ... just can't think of what would cause that,
as for sabotage would hope the former elec. had a little more pride than that but ... you never know