The minimum cross-sections,
shape and material depend the
appropriate application.
(c) least copper plating with 99. steel earth and concrete.5 mm
Round, solid (b) mm
Cable (b) mm²
Round, solid mm
Aluminium
Round, solid mm
Cable mm²
Copper-coated aluminium alloy Round, solid (c) mm
Aluminium alloy
Strip solid 2.
Causes corrosion
Corrosion occurs when different metals are connected
with one another soil, water molten salt, e.7 Materials and corrosion protec-
tion
The following materials are preferred for use extern-
al lightning protection systems: Hot galvanised steel,
rustproof steel, copper and aluminium. can also occur when a
single type metal embedded two distinct envir-
onments, e.5 mm
Round, solid mm
Cable (b) mm²
Round, solid mm
Hot galvanised steel
Strip solid 2.27: Material, form and minimum dimensions air-termination cables, air-termination rods, earth entry rods
and conductors
TBS
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169
Chapter The external lightning protection system
.5 mm
Round, solid mm
Cable (b) mm²
Round, solid (d) mm
(a) Chromium 16%; Nickel 8%; Carbon 0.g.g.TBS
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2.
Material Form Minimum dimensions
Copper, tin-plated copper
Strip solid 2. Corrosion is
when metal material reacts with its surroundings to
the detriment the material’s properties. All metals in
direct contact with the ground water can corrode
due stray current aggressive soils. alu-
minium round conductors arrestors and copper-
/steel earthing material.5 mm
Round, solid mm
Cable (b) mm²
Round, solid mm
Copper-coated steel (c)
Round, solid mm
Strip solid 2.5 mm
Rustproof steel (a)
Strip solid 2.08%
(b) Diameter can certain applications reduced mm2
(diameter mm) mechanical resistance not primary criterion.9% copper content
(d) Can used for air-termination rods and base
Table 2
