House with sub panel 40 feet from main in same basement. Subpanel has neutrals isolated. Grounds are separate and ground bar is bonded to panel.
There are 9 breakers in the sub panel. No main shutoff in the sub…only the 100 amp feeder breaker in the main. Since they are in the same building, I think this is OK? Can someone confirm?
Is a separate ground required from the sub panel to the main?