Installing
Electrical Grounds

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1-4. Grounding Plates. Grounding plates (Figure 1-17) are sometimes required by a construction print. They offer a better grounding system than grounding rods and are generally used in permanent communication and computer sites. Unless prints or specifications call for larger plates, the total surface area of grounding plates must be 2 square feet.

Figure 1-17. Grounding plate

Figure 1-17.   Grounding plate

a.   Iron or steel grounding plates must be at least 1/4 inch thick (Figure 1-18)

Figure 1-18. Iron or steel grounding plate

Figure 1-18.   Iron or steel grounding plate

b.   Nonferrous (copper or brass) grounding plates must be at least 1/16 inch thick (Figure 1-19).

Figure 1-19. Nonferrous grounding plate

Figure 1-19.   Nonferrous grounding plate

c.   The copper conductor, the clamp, and the plate are bolted together (Figure 1-20).

Figure 1-20. Conductor, clamp, and plate bolted together

Figure 1-20.   Conductor, clamp, and plate bolted together

d.   Grounding plates are buried 8 feet deep, and the hole is refilled in stages (Figure 1-21).

Figure 1-21. Buried grounding plate

Figure 1-21.   Buried grounding plate

e.   The depth requirements for grounding plates are the same as those for grounding rods (Figure 1-22).

Figure 1-22. Depth of grounding plate

Figure 1-22.   Depth of grounding plate

Content provider: U.S. Army, David L. Heiserman
Publisher: SweetHaven Publishing Services

Copyright © 2005, SweetHaven Publishing Services
All Rights Reserved.

Revised: April 19, 2005