standards and guidelines for communication sites - Radio And ...

STANDARDS AND GUIDELINES FOR COMMUNICATION SITES INTERNAL GROUNDING SYSTEM
❐ Each transmission line outer shield is properly bonded to the tower as required for
towers greater than 61 m (200 ft.) with a weather sealed transmission line
grounding kit.
❐ Each transmission line outer shield is properly bonded to the EGB (or grounding
electrode system) with a weather sealed transmission line grounding kit.
❐ All fencing, gates, and gate support posts are properly bonded to the grounding
electrode system.
❐ Ice bridge/cable supports and posts are properly bonded to the grounding electrode
system.
❐ The following items, and other metallic items located within 1.8 m (6 ft.) of the
grounding electrode system or within 1.8 m (6 ft.) of grounded objects, are properly
bonded to the grounding electrode system as applicable:
• Metallic members of all incoming telecommunications cables
• Main electrical ground
• Main telephone ground
• Any other grounding electrode system at the site
• Metallic entry ports
• Metallic conduits, piping, and raceways
• HVAC units
• Vent covers and grates (if not already grounded/bonded inside)
• Metal siding and/or roofing
• Metal fuel storage tanks (above or below ground)
• Skid plate or metal support frame of a prefabricated shelter
• Metallic structures for antenna supports, light fixtures, etc.
• Handrails and safety rails
• Ladders and safety cages
❐ Roof-Mounted antenna masts and metal support structures are properly grounded.
❐ Building side mounted antennas are properly grounded.
❐ Rooftop mounted towers are properly grounded.
❐ Dispatch centers co-located with communications towers have considered
additional grounding components/techniques to help improve protection of the site.
❐ Special grounding situations have followed minimum recommendations.
F.3 INTERNAL GROUNDING SYSTEM
❐ A properly sized master ground bus bar (MGB) is installed as required.
❐ MGB grounding electrode has been properly bonded and routed toward the
grounding electrode system.
68P81089E50-B 9/1/05 F-3