OP here again.

There are no ground wires of any kind in this Romex.
When I moved in the house had 4 15amp breakers with NO main breaker.
A gargage was put up and panel wiring relocated up and over the attic
to the outside wall about 30 years ago.
Township inspector came down and approved install.
Local utility found it OK .

My neighbor suggested "jumping the neutral" but I said ABSOLUTELY NO
WAY.