Leica SPIDER GR30 User Manual page 16

External system
Component
Air termination system
Down-conductor system
Bonding network
Earth-termination system
Internal system
Component
Equipotential Bonding Bar (EBB)
Metal partition panel
Suitable cable routing
No crossed cables coming from
different LPZ's
Surge Protective Device (SPD)
Magnetic shields
Suitable routing of wiring
Example: External system installation on a building
a
b
c
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Example: External and internal system installation on a pillar
16
Example Purpose
Lightning Interception of direct strikes
rods
- Conduction of lightning current
safely towards earth
Grounding Dispersion of the current into the
earth
Purpose
Equipotentialisation between all electric
conducting parts and the protective earth
conductor
Attenuate transient and magnetic
induced fields
Equipotential bonding for all metal com-
ponents and utility lines entering the
building or structure
Examples for utility lines:
Communication lines, antenna cables
Attenuation of the inducing magnetic
field
Reduction of the induction loop
d
e
a GNSS antenna
b Air termination
c Down conductors
f
d Solar panles
e Bonding network
f Earth termination
Safety Directions