It is my experiance that 99.9999% of electronic equipment does not need isolated grounding.
75% of the isolated ground receptacles & circuits that I've seen are a code violation. The worst being the one's that involve a ground rod that is not bonded to the electrical systems ground.
The best book I've ever read on grounding is "Soares Book on Grounding." Tom
Few things are harder to put up with than the annoyance of a good example.
