Matt - make sure that all 4 AC runs are from the same phase in the panel. For your digital, you may want to use one circuit for all of it.
Isolated grounds do work, but as Al says they do not meet code. I have a friend that did this. He put a 6 foot ground rod into the earth and ran wires to all of his audio outlets rather than using the ground wires from the panel.
Steve N.
Empirical Audio
Isolated grounds do work, but as Al says they do not meet code. I have a friend that did this. He put a 6 foot ground rod into the earth and ran wires to all of his audio outlets rather than using the ground wires from the panel.
Steve N.
Empirical Audio