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Your Ethos 8400 tester has a special polarity test
function.
It is a little known fact that a system can be
reverse wired with Live (Phase) to earth/neutral
and earth/neutral to Live (Phase) The sockets will
all work and conventional loop testers will show
and test that everything is correct despite this very
dangerous wiring condition.
Although extremely rare, this dangerous condition
can exist so if your test shows this fault do not
proceed - if in any doubt advise your customer to
contact their supply company immediately.
Touch the touchpad area next to the test button.
There should be no change in the indication given.
If the Voltage/Polarity LED flashes Red and a
warning tone is emitted when the touchpad is
touched a potentially dangerous polarity reversal
exists. Do not proceed. If in any doubt advise the
customer to contact the electricity supply company
immediately.
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EETTHHOOSS 88440000
INSTRUCTION MANUAL
Socket Testing
The Ethos 8400 has a unique feature for testing
sockets.
Switch the rotary dial to socket, insert 13 amp mains
test lead and the brown, blue & green into the
corresponding input terminals on the tester.
Plug the 13 amp mains plug into the socket under test.
If there is no voltage present the If there is voltage present and the
above will be displayed. wiring is correct the above will be
displayed. Correct wiring is indicated by a
tick in each of the phase colours.
If there is incorrect wiring dependent on the issue the following screens will appear.
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EETTHHOOSS 88440000
INSTRUCTION MANUAL
Reversed Live/Earth Missing Earth
Missing Neutral Reversed Polarity
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