nvent ERICO System 3000 - Post-Strike System Performance Testing

44 | nVent.com/ERICO
The following steps should be taken
to measure the performance of your
system after a known strike to the
terminal has occured:
A. Remove the waterproofing mastic
from the lower termination to expose
the connection.
B. Disconnect the downconductor from the
grounding system.
C. If possible, disconnect the structure
ground bonding cable from the
grounding system.
D. Measure the ground resistance of the
lightning protection grounding system
and record in column  of ground
resistance readings.
E. Measure the ground resistance of the
structure and record in column  of
ground resistance readings.
F. Reconnect the structure ground bonding
cable to the lightning protection ground
system, then measure & record in column
 of ground resistance readings.
G. At the lower termination of the
downconductor, disconnect the . mm

( AWG) bonding wire from under the
hose clamp.
H. With a multimeter, measure the continuity
between the center conductor and the
copper screen of the downconductor.
(this should be greater than , ohms).
I. If possible, measure the continuity
between the center conductor at the lower
and upper end of the downconductor (this
should be low ohms).
J. Reconnect the . mm

( AWG) bonding
wire to the hose clamp.
K. Reconnect the downconductor lower
termination and structure ground
bonding cable to the lightning protection
grounding system.
L. Reseal the lower termination and
grounding connection in waterproofing
mastic and ensure that the whole
connection is made waterproof.
M.Report any problems, defects of
inconsistencies to your nearest nVent
ERICO Distributor.