Check out 520.53(K) & (P). Also, there is a movement among many companies to make the EGC and grounded conductors reversed. So, at the company switch you would have the EGC and grounded conductor as a male connector and the phases as a female.
Qualified personnel should realize to retire a connector that won't lock... then there's reality.
Notice that it says "Qualified Personnel" not "Licensed Personnel"...
Depending on the situation we will add colored electrical tape to the connector to use it as another conductor type, such as using a black as a red when the red I was going to use is damaged from someone droppiing it off a truck...
Did you also see the tees?
Crouse Hinds now makes a fused safety switch + Cam-Loc combo for company switch applications right off the shelf instead of having to cobble them together out of different parts. also, check out the Crouse-Hinds Posi-Lok system.


Mike Wescoatt