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Discuss prospective fault current in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

B

benpollard

on electrical installation certificate at the top under supply characteristics it asks for
(next to single phase) a prospective fault current in KA
How do i measure this reading please?
Thanks!
 
PFC. Hi. ( you don't use no-trip for Ze and pfc at origin.). with your main switch OFF. and main earth disconnected from MET. remember this is a live test . the other way is to enquire the value os Ze ( good luck with your interminable lengthy phone calls ) and calculate the pfc.
 
Last edited:
Disconnect main earth for Ze but reconnect all earthing for PFC testing.
 
my error, there . well spotted IQ. a bit slow today, got man flu, and a deficiency of alcohol.
 

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