If you tell a qualified electrician to run a "DEDICATED" circuit with "ISOLATED" ground to each receptacle, what you will have is the following: A separate Hot, neutral, and ground wire from the receptacle back to your panel. The ground wires will be electrically isolated from any other ground or neutral wires in your system.
To be "DEDICATED" each receptacle would be on a separate circuit breaker (or fuse). Normally, the neutral and ground would be landed on the same neutral bar in your panel, and from there a main ground conductor would run to your main house grounding point. Usually a ground rod driven into undisturbed earth).
To be truly "ISOLATED", a separate grounding bar which is electrically isolated from the electric panel enclosure is installed in the electric panel. The main ground wire from your main grounding electrode (rod) would be attached to this bar, and all the circuit ground wires would be attached to this "ISOLATED ground bar" If your system is old, this may be difficult thing to do.
However, a separate ground (not isolated) from each receptacle back to the panel will likely suffice for your needs. Occasionally, the separate grounds are taken all the way back to the main grounding point, but if this is not done correctly, and a ground wire becomes loose and somehow creates another path to ground, the results could be dangerous. This is also true of any gound conductor, anywhere in the system.
Bottom line: If you consult with a qualified electrician, and tell him exactly what you are wanting, he/she should be able to provide a code approved installation.
Hope this helps.
To be "DEDICATED" each receptacle would be on a separate circuit breaker (or fuse). Normally, the neutral and ground would be landed on the same neutral bar in your panel, and from there a main ground conductor would run to your main house grounding point. Usually a ground rod driven into undisturbed earth).
To be truly "ISOLATED", a separate grounding bar which is electrically isolated from the electric panel enclosure is installed in the electric panel. The main ground wire from your main grounding electrode (rod) would be attached to this bar, and all the circuit ground wires would be attached to this "ISOLATED ground bar" If your system is old, this may be difficult thing to do.
However, a separate ground (not isolated) from each receptacle back to the panel will likely suffice for your needs. Occasionally, the separate grounds are taken all the way back to the main grounding point, but if this is not done correctly, and a ground wire becomes loose and somehow creates another path to ground, the results could be dangerous. This is also true of any gound conductor, anywhere in the system.
Bottom line: If you consult with a qualified electrician, and tell him exactly what you are wanting, he/she should be able to provide a code approved installation.
Hope this helps.