User Manual

Table Of Contents
Deployment Models 9
Basic Installation
2
Down conductor route—should avoid other services (parallel routing not
closer than 2m or 80 inches), not exceed accepted bending angles (500
mm or 20 inches radius), minimize conductor length, and meet or exceed
securing requirements (fixings not more than 1m (or 40 inches) apart for
the top 10% of the route and 2m (or 80 inches) for the remaining 90% of the
route.
Terminal—use a terminal suitable to environmental conditions that meet or
exceed the mast height and protection level requirements.
For recommendations on the design and installation of lightning-protection sys-
tems, please see the following standards:
LPI-175—Standard of Practice for the Design-Installation-Inspection of
Lightning Protection Systems, issued by the Lightning Protection Institute
NFPA 780—Standard for the Installation of Lightning Protection Systems,
issued by the National Fire Protection Association
UL 96A—Standard for Installation Requirements for Lightning Protection
Systems, issued by Underwriters Laboratories (UL) Inc.
The effectiveness of a lightning rod also depends on it’s height. The protection
umbrella narrows as mast height increases. The following illustration describes
approximately the height to coverage ratio.
So, for example, at 30 meters mast height the angle of coverage is 45 degrees.
60m
25
o
35
o
45
o
55
o
45m
30m
20m