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Record the value in the table on page 45 (lightning earth resistance).
7. The same procedure can be used to measure the resistance of the structure earth, bearing
in mind that the RCIE distance needs to be 5-10 times the size of the earth grid. Record the
resistance in the table on page 45 (structure earth resistance).
8. Reconnect the structure earth bonding cable to the lightning earth and measure and record
resistance in the table on page 45 (overall earth resistance).
9. Record the lightning strike recorder (LSR) reading in the table on page 45.
10. Report any problems arising from the above tests to your local LPI distributor for further advice.
Ground Resistance
Meter
LP Earthing System
Figure 38.
44
LIGHTNING PROTECTION INTERNATIONAL PTY LTD
HVSC Plus Downconductor
(Disconnected from LP Earth)
Structure Earth Cable
(Disconnected from LP Earth)
www.lpi.com.au
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