FOXBORO P0960HA Communication card module

Verify that at least two electrical paths exist between the equipotential plane and the earth electrode subsystem. Preferably the plane should be bonded to the building main structural steel (or downleads in wooden buildings) at least every 3 meters (10 feet). Measure the resistance between selected points on the plane and the earth electrode subsystem to verify that the total resistance does not exceed 5 milliohms. If the resistance does exceed 5 milliohms, check all joints for proper bonding and down hauls for proper sizes. See that all deficient conductors are replaced and that all poor bonds are redone.

FOXBORO P0960HA Communication card module

Inspect all conduit metallic pipes and tubes for continuity and bonding. (6) Verify that all electrical supporting structures and cable ways are interconnected and bonded. (7) Inspect the grounding of the electrical distribution system. (8) With all cables (signal cables, control lines, power cables, etc.) disconnected, measure the resistance between the signal ground terminal and the equipment case with an ohmmeter. The resistance should be greater than one megaohm

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