We used to install isolated grounds alot in commercial fit ups but for the past couple of years I haven't seen them much. Now everybody specs seperate neutrals to all receptacles, no multi wire circuits. We are currently doing a building in which 7 floors are for Adobe (pc company) and they want seperate neutrals for all circuits. We had to put in big panels and conduit to accomodate all the wires! I've heard of isolated grounds causing problems like getting a potential from regular ground to isolated ground. Anyone ever heard of anything like this?
