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Total Solution to Earthing & Lightning Protection |
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Air termination
Introduction
Air termination plays a critical role in the lightning protection system, capturing the
fullness of the lightning strike current and channeling this current safely to the
conductor network.
It is therefore highly important to install a correctly designed
air termination system.
IEC/BS EN 62305-3 advocates the use of air rods or catenary
conductors to provide a protective zone above the roof
structure and any prominent parts, such as HVAC systems,
plus a meshed conductor network to protect flat or slightly
inclined roof areas.
Through use of air rods, raised conductor or mesh, a
Lightning Protection System designer can achieve appropriate
positioning of the air termination in line with the three methods
proposed by IEC/BS EN 62305, namely:
–– The rolling sphere method
–– The protective angle method
–– The mesh method
These methods are detailed within our technical reference
section (p16/10).
Furse air termination products are specifically designed to
provide highly effective protection against the risks and
consequences from a direct lightning strike.
Our air rods are manufactured from high conductivity hard
drawn copper or aluminium, and provide an excellent, durable
strike point for lightning. Supplied with locknut and rolled
threads, these air rods fix easily to our air rod bases.
Our comprehensive range of air rod bases, conductor
fasteners and clamps is manufactured from high quality
copper or aluminium alloys, to ensure that a high level of
conductivity is maintained throughout the air termination
system, and that these components are robust enough to last
a significant number of years on exposed roof lines.
All these components link together with our copper or
aluminium conductors, which provide the low resistance path
for lightning current, from strike point safely to earth.