Floating ground ?

[dieseljeep]

Originally Posted by maxhifi

I am not sure what he meant by that. The utility feed will certainly have the neutral and ground bonded together at both the transformer and the service entrance at
The house. Check voltage between hot and a water pipe or radiator pipe to check it, should be about 120 to ground. If you get any other value either the pipe
Isn't grounded or there's a problem with your electrical system.

Get the electric utility to come and check it out.
The owner might be mistaken about the service entrance. I don't know of any homes that still have a two wire 120 volt service. They only were good for 30 amps, max.
The 1959 code required a minimum 120/240 volt, 100 amp, three wire service, for residential applications. It didn't make any difference, how many circuits were used. I've seen 100 amp services, that only had, two 15 amp 120 volt branch circuits. They owner did it to satisfy the insurance company.