Floating ground ?

[dieseljeep]

Originally Posted by wa2ise

My grandma's house probably was built around 1894, but it still had the same wiring when my grandma checked out, in 1984. World's earliest BX cable, you look at it crosseyed, and the insulation turns to powder... The subsequent owner has upgraded the wiring, and installed air conditioning.

The house was a classic grandma's house, with a front porch, a back porch, full attic, and an added big kitchen in the back.

I lived in a few houses like that, being the oldest section of town.
Many of them had additions, as well.
If the home has that early BX, it was wired for electricity, well after it was built. The real hi-class homes had gas piping in the walls. Slightly newer homes had K&T wiring, as well as gas lines.
The old family home was wired in the mid-1920's. Back then, the electric utility, subsidized the wiring installation.