but I want to make sure I select the proper path to earth.
ALL of the equipement in the room is either cord and plug connected or hard wired, right?
Unless the electrician that connected the equipement or wired the room forgot to connect the ground wires, all of the equipement is already bonded.
The code requires all services to be connected to the same grounding electrodes, hence the separate systems has no relevance.
Hope this helps!
[This message has been edited by WebSparky (edited 05-31-2003).]