standards and guidelines for communication sites - Radio And ...
standards and guidelines for communication sites - Radio And ... standards and guidelines for communication sites - Radio And ...
SITE PREPARATION CONSIDERATIONS APPENDIX B: SOIL RESISTIVITY MEASUREMENTS THIS PAGE INTENTIONALLY LEFT BLANK. B-28 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES SITE PREPARATION CONSIDERATIONS Resistance Ratio (Multiple Rods/One Rod) Line drawn from intersection solves system Ω to be 0.17 of single-rod Ω 0.01 0.1 1.0 1 5 10 50 100 Number of Rods Because 16 rods are used, point corresponding to “16” on Number of Rods in graph is selected FIGURE B-14 EXAMPLE CALCULATION OF GROUND ROD GRID CONFIGURATION 300,000 100,000 68P81089E50-B 9/1/05 B-29 20,000 10,000 5,000 2,000 1,000 500 Because grid is 900 sq. ft., a point just below 1,000 sq. ft. curve on graph is plotted.
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- Page 467 and 468: APPENDIX C PROTECTING AGAINST ELECT
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- Page 509 and 510: I NDEX Index Index AC power cabling
SITE PREPARATION CONSIDERATIONS APPENDIX B: SOIL RESISTIVITY MEASUREMENTS<br />
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B-28 68P81089E50-B 9/1/05
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