Cisco CX-FEIP-1TX= Installation and con?guration User's Guide Page 121

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PTP 800 Series User Guide Grounding and lightning protection
phn-2513_004v000 (Oct 2012)
2-9
General protection requirements
Ensure that the PTP 800 installation meets the general protection requirements described
in this section.
Basic requirements
Install the outdoor equipment, that is antenna and ODU (if deployed), in ‘Zone B’ (see
Lightning protection zones on page 2-8).
Ground the indoor devices, that is CMU and IRFU (if deployed), at their chassis bonding
points.
Grounding cable requirements
Use grounding cables that meet the following requirements:
Grounding cables are no less than 16mm
2
or #6AWG in size, with solid or stranded,
tinned and/or jacketed copper conductors.
Grounding conductor runs are as short, straight, and smoothly as possible, with the
fewest possible number of bends and curves.
Grounding cables are not installed with drip loops.
All bends have a minimum radius of 203 mm (8 in) and a minimum angle of 90°. A
diagonal run is preferable to a bend, even though it does not follow the contour or run
parallel to the supporting structure.
All bends, curves and connections are routed towards the grounding electrode system,
ground rod, or ground bar.
Grounding conductors are securely fastened.
Braided grounding conductors are not used.
Approved bonding techniques are employed when connecting dissimilar metals.
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