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COMBINING SOIL RESISTIVITY TESTING WITH CLAMP-ON OHMMETERAPPENDIX D: GROUNDING (EARTHING) ELECTRODE SYSTEM TESTING/VERIFICATION D.5 COMBINING SOIL RESISTIVITY TESTING WITH CLAMP-ON OHMMETER Providing site soil resistivity readings along with clamp-on ohmmeter readings to an engineering firm specializing in grounding electrode system design is at times the only method available for grounding electrode system resistance verification. Typically, the engineering firm will use the supplied data which is entered into a specialized computer program that determines grounding electrode system resistance for the site. The data required is as follows: • The results obtained from a soil resistivity test • Individual grounding electrode system component testing data from the clamp-on ohmmeter • Grounding electrode system layout map/specifications • Detailed “as-built” drawings for the site D-20 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES COMBINING SOIL RESISTIVITY TESTING WITH CLAMP-ON OHMMETER TABLE D-4 FALL-OF-POTENTIAL TEST WORKSHEET 0% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Test completed by: Date: Client / Project: Site Location/ID: Ground Resistance Tester Model: S/N: Calibration date: Soil Description: Ambient Conditions Temperature: Distance from Grounding Electrode System Grid Test Data Present conditions (dry, rain, snow): Date of last precipitation: Notes: % ft (m) Ohms (Ω) 68P81089E50-B 9/1/05 D-21
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© 2005 MOTOROLA, INC. ALL RIGHTS R
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TABLE OF CONTENTS Chapter 1. Introd
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STANDARDS AND GUIDELINES FOR COMMUN
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CHAPTER 1 INTRODUCTION 1 This manua
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CHAPTER 2 SITE DESIGN AND DEVELOPME
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CHAPTER 3 COMMUNICATION SITE BUILDI
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CHAPTER 4 EXTERNAL GROUNDING (EARTH
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CHAPTER 5 INTERNAL GROUNDING (EARTH
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CHAPTER 6 POWER SOURCES 6 6.1 LOCKO
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CHAPTER 7 SURGE PROTECTIVE DEVICES
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CHAPTER 8 MINIMIZING SITE INTERFERE
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CHAPTER 9 EQUIPMENT INSTALLATION 9
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APPENDIX A ELECTROMAGNETIC ENERGY I
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APPENDIX B SOIL RESISTIVITY MEASURE
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Page 439 and 440: STANDARDS AND GUIDELINES FOR COMMUN
Page 467 and 468: APPENDIX C PROTECTING AGAINST ELECT
Page 471 and 472: APPENDIX D GROUNDING (EARTHING) ELE
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Page 509 and 510: I NDEX Index Index AC power cabling
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