Discuss Prospective fault current ? in the UK Electrical Forum area at ElectriciansForums.net
it's basically the current caused by shorting out L-N ( PSCC ) or L-E ( PEFC ). depends in the circuit impedance, the lower the impedance, the higher the current.
prospective short circuit current and prospective earth fault current. you find that these are approx the same if the E conductor is the same size as the L. with T/E cable though the cpc is smaller, so the pscc is larger in value than the pefc. this is because the smaller cpc has a higher resistance ( approx. 1.66 x ) than the L and N conductors.
There's a list of commonly used acronyms on here somewhere Martin, if you're going to be a regular visitor you'll need em mate.
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