I am rewiring my basement that has originally been set up as a basement suit and trying to isolate the basement from the upstairs panel. The house was built in the 70s and has had the service upgraded to two 100A panels some time ago. The panel for the upstairs has the main panel in the basement and then the sub panel on the upper floor. This sub is fairly old and has no ground bar to isolate the neutral from ground which is a code requirement. Has anyone else run across this with any ideas to help?
