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COMMON GROUNDING (EARTHING) CHAPTER 4: EXTERNAL GROUNDING (EARTHING) BUILDING STEEL FIGURE 4-3 COMMON GROUNDING EXAMPLE TO SUPPLY TRANSFORMER SERVICE EQUIPMENT GROUNDED CONDUCTOR CONCRETE ENCASED ELECTRODE GROUND ROD METAL WATER PIPE GROUND RING TO LIGHTNING PROTECTION SYSTEM 4-6 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES GROUNDING (EARTHING) ELECTRODE SYSTEM COMPONENT AND INSTALLATION REQUIREMENTS 4.4 GROUNDING (EARTHING) ELECTRODE SYSTEM COMPONENT AND INSTALLATION REQUIREMENTS WARNING To prevent accidental damage to underground utilities, always have the local utility company or utility locator service locate the underground utilities be<strong>for</strong>e excavating or digging at a site. The external grounding (earthing) electrode system may consist of, but is not limited to, the following components, shown in Figure 4-4: • Ground rods or other grounding electrodes • Concrete encased electrode • Building or shelter ground ring • Tower ground ring • Grounding conductors • Radial grounding conductors • Guy wire grounding conductors (guyed towers only) • Tower ground bus bar • External ground bus bar • Fence grounding conductors 68P81089E50-B 9/1/05 4-7
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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 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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APPENDIX C PROTECTING AGAINST ELECT
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APPENDIX D GROUNDING (EARTHING) ELE
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APPENDIX E GENERAL CONVERSIONS AND
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APPENDIX F R56 COMPLIANCE CHECKLIST
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I NDEX Index Index AC power cabling
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