How do you annotate/mark wires in the same circuit?
Is there any convention employed by the pros as far as identifying, tagging, annotation wires in the same circuit appearing twice in the same conduit?
For example I have a hot wire from circuit 7 coming into the box. The wire than runs to another box to a switch and back through the same rigid conduit. So how I have three wires in this box from circuit 7. Is there any sort of convention to mark it so I know which wire is GOING TO the switch and which wire is COMING from the switch?