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Discuss PFC reading in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
What earthing system was it?
Did you do any testing before swapping the CU?
Presumably that was the Prospective Earth Fault Current (PEFC) as opposed to the Prospective Fault Current (PFC). The Prospective Short Circuit Current (PSCC) must have been substantially greater otherwise the volt drop on the loads would have been enormous to the point where things just wouldn't have functioned.Carried out a ccu replacement and then started testing, my PFC was 38A & 6.11 ohms. Just wanted to have some thoughts as mine was that there must be a poor connection or break in the main cpc?
Thanks
It is advisable to test before carrying out any work to identify any issues and ensure the installation is fit and safe for continued service.No i don’t, and no previous records available
Carried out a ccu replacement and then started testing, my PFC was 38A & 6.11 ohms. Just wanted to have some thoughts as mine was that there must be a poor connection or break in the main cpc?
Thanks
Anytime I've had readings like that it has always been down to an external fault on the DNO's side. As Strima mentioed, it is always wise to do your testing before a board change rather than afterwards!
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