Hello Jeffrey and listers.  Sorry I have taken so long to post this.  We
have been busy this weekend.

When I have wires to connect to a power supply, I too tie a knot in the hot
wire and put a braille notation on the plus post to be sure I don't make a
mistake.  I don't work on wiring but electrical tape to distinguish colors
works too.  To answer your question Jeffrey, Casey did not have a job in
electronics but dabbled with stuff at home.  He kept wires separated by
tying bread ties on them.  If they were tiny, then he used the tape.  I
always wondered if the metal in the ties would cause a problem.  I'll never
forget the day that Casey's brother gave him an old tube A M radio to play
with.  Casey plugged it in and turned it on.  It hummed loudly then filled
the room with smoke but the thing played on!  I think that one hit the
trash!

Anne, K1STM