The "service drop" was a piece of POTS wire, red and green for hot, black and yellow for grounded. Interior of the barn wired the same way. No boxes,
now that truly takes brass ones...
~S~
I had a similar one... they used two pieces of POTS wire though, each with 3 conductors paralleled. No idea what it used to supply since it had been cut within 2" from the splice it came out of. Pulled out during the rewire of a friend's new place (sold as "completely rewired).
