nvent ERICO System 3000 - Page 46

46 | nVent.com/ERICO
To Upper
Termination
. mm

( AWG)
Wire Temporarily
Disconnected
Ground Resistance
Meter
LP Downconductor
(Disconnected from
LP Ground)
Structure Bonding Cable
(Disconnected from L P Ground)
LP Grounding System
To Upper
Termination
. mm

( AWG)
Wire Temporarily
Disconnected
Ground Resistance
Meter
LP Downconductor
(Disconnected from
LP Ground)
Structure Bonding Cable
(Disconnected from L P Ground)
LP Grounding System
Figure : Grounding and downconductor continuity testing
B
C
Disconnect the
downconductor from
the grounding system.
B
If possible, disconnect
the structure ground
bonding cable from
the grounding system.
C
Figure : Grounding and downconductor continuity testing
D.
E.
E
D
Measure the ground resistance of
the lightning protection grounding
system and record in column  of
ground resistance readings.
D
Measure the ground resistance of
the structure and record in column 
of ground resistance readings.
E