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At our Regional Dispatch Center, the equipment is Motorola. Motorola has very strict specifications regarding static discharge/lighting protection at their installations.
Our Comm equipment room is below grade. It includes dispatch console interface equipment, telephone/911 equipment, data servers, etc. There are no antenna cables entering the room, however there are other communication cables, i.e. telephone, fire alarm, fiber optic, etc. All local radio equipment is located on the 2nd floor and connectivity to the County 800 mHz trunked radio system is via fiber optic cable to a microwave link site about 4 miles away.
Motorola requires a stranded 4 awg “halo” mounted around the room above the equipment rack height. Each equipment rack and other stand alone equipment is attached to the “halo” with a separate stranded 4 awg cable. Even the metal door frame and each electrical conduit entering the room. There are NO SHARP BENDS in the “halo” or separate grounding wires, only gentle bends with at least a 12″ radius. The whole room is on a 2 stage UPS with backup generator.
The “halo” is grounded directly to the electric service entrance ground point some 100 feet away. The “halo” itself is not a complete loop around the room, rather it starts and ends on the same wall but the ends are not connected together.
Motorola has a design specification number (R56) for this. I’ll bet the book for that is fairly large. They offer a 4 day R56 training class for $1900.