To
implement equipotential bonding correctly, there-
fore necessary select the right components use.1. Switching
devices must not inserted into the protective con-
ductor.2 Versions
Each system has different environmental and normat-
ive requirements relating equipotential bonding.2: Minimum dimensions cables, protection
class IV
TBS
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179
Chapter The internal lightning protection system
.
Equipotential busbars and earthing clamps are key
components this kind installation.
3.
Material
Cross-section cables connecting the in-
ternal metallic installations with the equi-
potential busbar
Copper mm²
Aluminium mm²
Steel mm²
Table 3.1 Minimum dimensions cables
Minimum cross-sections according IEC 62305-3
for lightning protection equipotential bonding
Material
Cross-section cables connecting different
equipotential busbars with one another or
with the earthing system
Copper mm²
Aluminium mm²
Steel mm²
Table 3. Connections for testing purposes are permit-
ted. the context
of lightning protection equipotential bonding, these
must fulfil the requirements and undergo tests as
defined IEC 62561-1.TBS
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Equipotential bonding according IEC 60364-4- 41
and IEC 60364-5-54
Protective conductors must protected suitable
manner against mechanical damage, chemical or
electrochemical destruction well against electro-
dynamic and thermodynamic forces
