order achieve optim-
um splitting the lightning current, the conductors
must evenly distributed around the outer walls of
the building.
The reduction the lightning current results smal-
ler temperature rise the metallic elements there is
a lightning strike. This means that possible run
the conductors behind heat insulation composite sys-
tems and fire locks, for example.1 Number and arrangement
The conductors should preferably installed near
the corners the building. enable easy identification,
the measuring points should be
marked, for example with num-
bers.
Measuring point the point entry into the earth
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97
Chapter The external lightning protection system
.2.1 Planning methods
The down-conductors connect the air-termination sys-
tem with the earthing system via short, direct con-
nection.22: Distances between down-conductors for dif-
ferent lightning protection classes
A measuring point must cre-
ated the point where each down
conductor meets the earthing sys-
tem.2.TBS
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2. Distance (a) between the down-conductors
Lightning protection class
Distance between the
down-conductors
I m
II m
III m
IV m
Table 2.
2.1
