High Current Test (Ze)
The high current should only be conducted with the distribution board test lead set
Socket & See SOC/DLMPROLEAD configured in 2 wire mode. Do not use this function
with the Socket & See mains lead SOC/DLMPROLEAD 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.
BS 7671 calls for an IPF value to be recorded, this is the higher of the PSC and PFC as
described above.
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