Lightning Protection International Stormaster ESE, Installation Manual

Page: 24 / 43

22
The following are recommendations and points that should be
considered when installing conventional downconductors.
• Downconductors should be installed at each external corner of
the building and additional downconductors installed at spacing not
exceeding 20m.
• The most direct path to ground is recommended avoiding sharp
bends.
• Downconductors should be installed around the outside walls of the
structure. It is not recommended to install downconductors
internally to the structure.
• It is not recommended to locate downconductors in areas where
personnel are liable to congregate.
• Any extended metal running vertically through the structure should
be bonded to the lightning downconductor at the top and bottom of
the structure.
• Each downconductor should be connected to the earthing system.
• Where practical all structural steel and metallic reinforcement in the
structure should be bonded to the downconductor system.
• The use of copper conductors are recommended and should have a
cross sectional area of not less than 35mm
2
.
• Recommended copper conductor size is 25mm x 3mm.
• The copper should be of a grade normally used for commercial
electrical work.
• The use of PVC insulated copper, bare aluminium and stainless steel
can be used as downconductors.
• Suitable fasteners should be installed to adequately secure all
downconductors.
• Downconductors should be fastened at spacings not exceeding 1.0m
on horizontal runs and not exceeding 1.5m on vertical runs.
LPI offers within it’s range of Stormaster terminals a GI version which is
designed for a threaded connection to a 2 inch GI pipe. Please refer to
drawing ST-2 on page 12 and figure 13 for further details.
The Stormaster GI terminal is supplied with a threaded coupler (female
thread) fixed to the terminal and designed for connection to a 2 inch
pipe (Male thread).
Installation
of Stormaster
GI Terminal to
threaded pipe