Grounding instructions System grounding (supplemental ground) is as follows: • The conductor wires can be no smaller than the ungrounded branch-circuit supply conductors (usually 16-gauge or higher). • Acceptable wire: bare or covered with green (or green-and-yellow-striped) jacket. • Conductors (and power receptacles) shall connect to earth ground at the service equipment (usually a cold water pipe or copper ground rod). • The supplemental ground must: be used regardless of power cord ground, be connected to the ground lug on the bottom of the cabinet, and retain ground connection when the power supply module is unplugged. • Connect the grounding lugs of all units to system ground