orange camlock??

[Mister Kool]

Hope this is the correct thread to ask this..

there is 400A 120/208V 3phase 4wire dissconnect connected to a junction box that has camlock connectors. There are 5 connectors, black, red, blue, white, green & orange.

Why the 5th one (orange)?????

 

[Jraef]

Usually a signal contact; wired to a disconnect switch aux. contact or it just carries 120V power to indicate to something that the plug is disconnected.