NNoo TTrriipp LLoooopp tteesstt ((ZZss))
Connect the brown, blue and green test leads to the
corresponding output terminals on the tester.
The brown test lead can be substituted by using the red
remote test probe supplied.This allows remote
activation of the Ethos 8400 from the safety of the test
probe ensuring that you are always looking at the point
of contact and not the Ethos 8400.
If testing the loop impedance at a socket plug in the
13amp plug and switch on the power.
N.B. The circuit under test must be live to loop testing.
The test will be inhibited if the wiring is incorrect
polarity on the circuit under test.
Rotate the function selector switch to ‘NO TRIP’
Connect the test lead to the socket/circuit under test.
Providing that the connections are correct and the
supply voltage is within the correct range the
VOLTAGE/POLARITY LED will light Green, the Ethos
8400 will start taking some background measurements
and will display the Line Neutral supply voltage
Voltage will be displayed. Then press the test button.
The screen will show a symbol and the word testing.
The result of the test will be shown in the primary
display.
A single press of the PFC Loop button will toggle the
display so that the PFC is shown in the primary display
and the impedance in the secondary display. A further
press will toggle the results between the primary and
secondary displays.
The leads are an integral part of the tester set-up and
should accompany the tester when being returned for re-
calibration or service. Do not use any other type of
mains lead or test lead set.
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INSTRUCTION MANUAL
2 Wire lead configuration Brown (live) Blue(neutral)
Green (earth) The neutral is inserted into the back of
the earth lead to give a combined contact for 2 wire test
method.
The brown test lead can be substituted by using the red
remote test probe supplied.This allows remote
activation of the Ethos 8400 from the safety of the test
probe ensuring that you are always looking at the point
of contact and not the Ethos 8400.
HHiigghh ccuurrrreenntt tteesstt ((ZZee))
The high current should only be conducted with the
distribution board test lead set Ethos 2125 configured
in 2 wire mode. Do not use this function with the Ethos
mains lead 2126 or the distribution lead set in 3-wire
configuration.
Rotate the function selector to the HIGH I position.
Connect the test lead probes to the circuit under test
and press the test button.
The result will be shown in the primary display and the
mains voltage will be shown in the secondary display.
Press the PFC/LOOP button to show the PFC/PSC in
the primary display depending on being connected L-E
or L-N and the impedance in the secondary display
area.
Note: The reading described here as PFC/PSC will be
the prospective fault current for the circuit being
immediately tested. This is known as PSC in the case of
a test between Live and Neutral or PEFC for a test between Live and Earth conductors.
The 17th edition wiring regulations 2008: amendment 1 2011, call for an IPF value to be
recorded, this is the higher of the PSC and PEFC as described above.
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EETTHHOOSS 88440000
INSTRUCTION MANUAL
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