If the roof structure has conductive continuation into
the building (e. with stainless steel pipe with a
connection the ventilation air-conditioning sys-
tem), then the air-termination rod must erected a
separation distance (s) from the object pro-
tected. The protective angle method
is well suited determining the positions air-termin-
ation rods providing merely additional protection for a
small number protruding building parts struc-
tures. This distance safely prevents arcing the
lightning current and dangerous spark creation.
This method should therefore only used where the
building already protected with air-termination rods
whose positions were determined using the rolling
sphere grid method.g.TBS
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Protective angle
Separation distance
Protective angle and separation distance air-termination rods photovoltaic system
2.1.
TBS
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2018
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en
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2020/01/10
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63
Chapter The external lightning protection system
. Here necessary observe the relevant
separation distance (“s”) between earthed roof struc-
tures and metal systems.1.
All roof structures must protected with air-termina-
tion rods.
Using the protective angle method
is only advisable simple small
buildings and for parts build-
ings.2 Protective angle method
Using the protective angle method only advisable in
simple small buildings and for individual sections of
buildings
