I had a question today about a violation for not bringing the neutral to the disconnect switch. Here's the setup, a trough with a 3P, 30 amp non-fused disconnect switch connected via an offset nipple. The two conductors (H&N) run into the trough, the hot goes into the disconnect switch via the nipple and the switch leg comes out via the same nipple (a simple switch loop). Both the switch leg and the neutral continue on to the load. Inspector says that you need to run the neutral into and back out of the disco. Electrician says no, it's no different than feeding a switch with two conductors and no neutral (a switch loop). Inspector wants a neutral bar installed and the neutral run into and back out of the disco. Opinions?