Chapter 1: About This User Guide
14
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All grounding cables must be a minimum size of 10 mm2 csa (8AWG), preferably 16 mm2 csa
(6AWG), or 25 mm2 csa (4AWG).
Grounding guidelines
Implement the following requirements, when routing, fastening and connecting grounding cables:
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Ensure the grounding conductors run as short, straight, and smoothly as possible, with the minimum
bends and curves.
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Do not install the grounding cables with drip loops.
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All bends must have a minimum radius of 203 mm and a minimum angle of 90° as shown in below
figure. A diagonal run is preferable to a bend, even though it does not follow the contour or run
parallel to the supporting structure.
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Route all bends, curves and connections towards the grounding electrode system, ground rod, or
ground bar.
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Securely fasten the grounding conductors.
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Use the braided grounding conductors.
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Use the approved bonding techniques for the connection of dissimilar metals.
Figure 1 :
Grounding cable minimum bend radius and angle
Pole or tower mount guidelines
If you need to install AP to a metal tower or pole, then in addition to the general protection requirements,
follow the below requirements:
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Ensure that the position of the equipment is lower than the top of the tower or its lightning air
terminal.
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Ensure that the metal tower or pole is correctly grounded.
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Install a grounding kit at the first point of contact (top), between the drop cable and the tower.
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Install a grounding kit at the bottom of the tower, near the vertical to horizontal transition point.
