Earth Enhancing Compounds; Bonding The Lightning Earth - Lightning Protection International Stormaster ESE 15 Installation Manual

∆
Waterproofing mastic tape should be used on all mechanical connections
∆
It is recommended to apply earth enhancing compound such as LPI RESLO-20, GRIP-10 or
SRIM-20 to reduce soil resistivity to less than 10 ohms
∆
An earth pit should be installed where the end of the downconductor terminates to the
lightning earth as shown in figure 10. This gives an access point for disconnection
and future testing
∆
Do not lower terminate (connect) the downconductor to the earthing system at this point
in time
Note: If due to space constraints it is not possible to install a radial earth as recommended,
consult with LPI or an authorised distributor for further advice
When using earth rods:
∆
Use driving heads to prevent mushrooming on top of rod
∆
Use driving heads when using coupled rods
∆
Use a post or picket driver

Earth Enhancing Compounds

∆
Earth Enhancing Compounds (such as LPI RESLO-20, GRIP-10 or SRIM-20) are supplied
when the existing soil mass has a high resistivity
∆
Using the compounds can lower earth resistance/impedance
∆
Compounds will require water and a mixing container
∆
Follow all installation and safety instructions as supplied with products when applying
the compounds

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 ground plane. This will stop ground loops and
potential differences arising under transient conditions.
Before bonding of these earths takes place, make sure proper authorisation is gained.
Bonding cable must be 70 mm
necessary to use a transient earth clamp (TEC100-2L) which bonds all earths to the same
potential under transient conditions.
For further information, it is advisable that local applicable standards are used, i.e. IEC 62305,
AS1768, NFPA 780, C22.1-98 and NEC.
18
LIGHTNING PROTECTION INTERNATIONAL PTY LTD
(2/0 AWG) minimum depending on local standards. It may be
2
www.lpi.com.au