Figure 38. Typical ground clamp installation.
Locate the run where it will not be broken or detached. For ordinary runs, place the fasteners 24 inches
apart. On wire which is within 5 feet of the floor, place fasteners 16 inches apart. When spanning
beams in cellars or basements, place fasteners on every beam. When a run is made on beams, and
parallel to a wall, run the wire within 3 inches of the wall placing a fastener on each beam.
When running ground wire, observe the following rules:
a. Run the wire as directly as practical from the protector to the ground clamp. Do not make
spirals or bends greater than a right angle.
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