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b. Wire. Insulated wire is used to connect the clamps together and to ground. Wires with insula-

tion missing, cut, cracked, or otherwise in poor con­dition, should be replaced.

c. Safety aspects. Protective grounding is re­quired to ensure worker safety. Follow the instruc­tions given in your service safety manual in regard to the following grounding aspects.

(1) Where to apply grounds in relation to the work site.

(2) Size of ground wire. A minimum 2/0 AWG copper ground wire is recommended. Check ASTM F 855 for maximum fault current capabilities of grounding cables.

(3) Staying at least 10 feet (3 meters) clear of any protective grounds is recommended to avoid touch-and-step potentials. Otherwise, wear insu­lated footwear and provide other hazard minimizing measures.

Section IV-CLIMBING EQUIPMENT

15-14. Body belts, climber straps, and safety straps.

Personal climb equipment must meet the require­ments of ASTM F 887 and OSHA Standard 1926.959. Only the best grade, smooth, pliable har­ness leather, or other material approved and con­forming to government specifications, should be used in body belts and safety straps.

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