FOXBORO P0916SG CPU controller

Perform spot check measurements of bond resistance at structural joints using the double balanced bridge technique. Where bond resistances greater than 1 milliohm are encountered, require that bond surfaces be recleaned, bolts retorqued, or supplemental jumpers provided as needed to achieve 1 milliohm. (d) In non-steel frame or masonry buildings, inspect the installation of the supplemental grounding network.

FOXBORO P0916SG CPU controller

 In particular, verify that the grounding cables provide the required 2,000 circular mils per running foot of conductors times the length of the wire connecting the higher frequency equipotential signal ground plan to the earth electrode subsystem.Verify that the ground risers are bonded to the equipotential plane and that the bond resistance does not exceed 1 milliohm. Inspect to assure that the ground risers are located to provide the shortest possible lengths to the equipotential plane.

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