My county uses the 2014 NEC with no modifications. I'm wiring my newly built detached garage myself.
I had the rough-in inspection, and everything was ok for it, but the inspector had some concerns about my 50A outlet that might be a problem during the final inspection.
It is a NEMA 14-50 receptacle (non locking) that I installed for EV charging. He said people usually put a disconnect on it for plugging in welders and stuff, but since I'm using it for an EV, I could put a lock on the breaker instead (he said to look for water heater locks).
I understand the disconnect from a safety/convenience factor for things that might immediately draw current when plugged in and arc... but I don't want to mess with installing a disconnect since the circuit breaker is ~20 ft away, unobstructed. The lock makes no sense to me.
I looked through the NEC and couldn't find any code suggesting a disconnect (or breaker lock)... is anyone aware of something like that? Just wanted to check before I question him more about it.