24
E D G E I Q H A N D B O O K
B.6
With installation isolated at main switch, perform
an
external earth fault loop impedance
test
between incoming active supply (line side terminal
of main switch) to the main earthing conductor:
1. Disconnect main earthing conductor from
the earth bar in the main switchboard.
2. Connect your installation testing device
(e.g. Fluke 1664) to the incoming active
(line side terminal of the main switch)
3. Perform external impedance test and
record result.
4.
Re-connect the main earthing
conductor
5. With main earth re-connected to the Earth
bar,
perform the impedance test again
to
confirm that Earth is correctly connected,
(note: second impedance test result may be
lower due to parallel earth paths being
connected, meaning that your device may
indicate a higher fault current)
Result :___________________ Ohms Ze
(External impedance)
Result :______________________ Amps
Please tick when this step is completed:
Yes
Note: Circuit breaker main switch fault rating must be
rated higher than earth impedance test result when
calculated in amps
C
Post power-on commissioning
C.1
Re-energise the main switch isolator supplying
EdgeIQ when all electrical testing in Part B has
been completed
Please tick when this step is completed:
Yes
Note: Do not close the wire junction box of the
EdgeIQ unit yet as you will need to test line and load
voltages (live testing). Do not allow unauthorised
personnel near the opened junction box cover in this
condition
C.2
Wait 2 to 5 minutes before the
Green
status LED
indicator presents.
Please tick when status LED is green:
Summary of Contents for EDGEIQ EE-202-0050
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