OK... Got caught up in a job for a Veterinary Office/Kennel. I've been a good sparky and have went with PVC FS boxes and WP covers to protect from washdowns.
Time comes for the service, and it really could get away with 100A (gas heated building) but I figured for 200 for upgradability...
Using the only available conductors from my supplier for a 200A service, I ran 2" PVC from the disco to the panel, and installed the 4/0 Tri rated "new stuff" that's really easy to work with.
Several things suddenly came to a really bad light...
The neutral is 2/0...
Table 310.15(b)(6) is for dwellings only!
My 2" pipe is too small for 3 250KCm conductors and a #2 Ground...
GE brand 150 Ampere Mains are rare as hens teeth.
I asked my AHJ what to do and he said:
"You mean to tell me that 4/0 is big enough for 200A in a home, but not in a business?"
I was dumbfounded...
He suggested that I was "reading too deep into the code."
Hunh?
