Joe,
I hated that old RH wire. Many times in these old homes here I would drop down and old light fixture, ( Because the home owner wanted a new one installed) only to find that all the insulation on the old RH was worn away. The homeowner had 100-150 watt bulbs in those old lights and all the insulation of the wires behind the fixture was gone. So all I had to work with was 2 pieces of bare #14 copper wire. Then the homeowner would complain to me that it took more than and hour or two to hang a light fixture.
Caper
