1.1 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. To
implement equipotential bonding correctly, there-
fore necessary select the right components use.
3.2: Minimum dimensions cables, protection
class IV
TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
179
Chapter The internal lightning protection system
.TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
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.
Equipotential busbars and earthing clamps are key
components this kind installation. the context
of lightning protection equipotential bonding, these
must fulfil the requirements and undergo tests as
defined IEC 62561-1. Connections for testing purposes are permit-
ted.
Material
Cross-section cables connecting the in-
ternal metallic installations with the equi-
potential busbar
Copper mm²
Aluminium mm²
Steel mm²
Table 3. Switching
devices must not inserted into the protective con-
ductor.2 Versions
Each system has different environmental and normat-
ive requirements relating equipotential bonding
