I've passed it in July 2007. It was a question in that paper that I am seeking clarification on.
What would you say the answer is Risteard?
PFC is the highest of PEFC and PSCC so you are wrong.
Polarity is both a dead and a live test so you are wrong.
Earth electrode resistance tests are used for generator sets etc. otherwise an earth fault loop impedance test is likely on a TT system protected by RCD.
RCD testing comes under functional tests so would NOT be one of the first three live tests.
but you cannot determine which is higher unless you test BOTH. So I am right.PFC is the highest of PEFC and PSCC
Polarity. It says that polarity shall be verified. There is nothing that states this is done with the installation energised. When it is done live then it is a functional test and outside the boundaries of this question (the FIRST three). So I am right.
"The prospective short-circuit current and prospective earth fault current shall be measured....."
Risteard said:But my answer would be:
External earth fault loop impedance / earth electrode resistance
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