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Bonding the Lightning Earth
Where separate earths exist, e.g., structure, power, communications and lightning protection,
they need to be bonded to form an equipotential earth reference. The action ensures potential
differences arising under transient conditions are minimised.
Before bonding the various earths together, ensure the appropriate authorisation has been
obtained.
The bonding conductor used is typically 70 mm
standards.
It is acceptable to use a Transient Earth Clamp, e.g., LPI TEC100-2L, to achieve bonding of some
earths only under transient conditions, if local authorities disallow direct bonding between
those earths.
Reference should also be made to local standards that apply, e.g., IEC 62305-3, AS/NZS 1768,
NFPA 780, CSA C22.1, NEC etc.
Labelling
It is the responsibility of the customer/installer to label earth pits or earthing systems to local
requirements.
Installation of the HVSC Plus Downconductor
If installing LPI HVSC Plus downconductor(s), the upper termination(s) at a pre-specified end of
the cable may have already been prepared by the LPI factory before being shipped.
When removing HVSC Plus downconductor packaging, do not use a knife or sharp implement, as
this can damage the outer layer of the termination and render it useless.
The LPI HVSC Plus has an outer layer which is approximately 2 mm (1/16 in.) thick. Be careful
not to damage this layer.
Hauling the HVSC Plus Downconductor
∆
Check that the correct length of HVSC Plus downconductor has been supplied. The length of
HVSC Plus will be marked on the drum
∆
Make sure that the cable drum is in a serviceable condition
∆
Place the HVSC Plus downconductor cable drum close to where it is to be installed (Figure 7)
www.lpi.com.au
LIGHTNING PROTECTION INTERNATIONAL PTY LTD
(2/0 AWG), but its size may depend on local
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