Discuss why Pfc is 16kA in Installation Cert? in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
it`s not the pfc that`s 16.5kA ,it`s pscc that`s 16.5kA and that`s only if it`s a BS 1361type I or a BS 88 gG fuse if it`s a BS1361 typeII then it`s 33kA.Now when you`re talking about 1ka or 2ka pfc on the breakers(pscc) that`s commonly BS 3871 type 2 breakers 5A 1kA,>5A 2kA.hope that make sense!
sorry, i meant Periodic Inspection Report, there are some characteristics of the supply. like voltges, frequency, Ze,also there is Pfc there, for Ze, it is normally 0.35, for Pfc, it is normally 16.5kA. I dont understand since we have to measure it again, why use 16.5Ka there, also it is not acceptable for CBa which are 6kA?
sorry, i meant Periodic Inspection Report, there are some characteristics of the supply. like voltges, frequency, Ze,also there is Pfc there, for Ze, it is normally 0.35, for Pfc, it is normally 16.5kA. I dont understand since we have to measure it again, why use 16.5Ka there, also it is not acceptable for CBa which are 6kA?
Read pevvers post above. People are confusing the short circuit breaking capacity of MCB's with the PFC at the cu and the breaking capacity of the main fuse at the primary supply.
like i said, i am talking about pfc, not breaking capacity...
Hi I've come across this this thread a little late, but if it helps.. P19 in Scadden " For supplies up to 100A the supply authorities quote a value of PSCC of 16KA, at the point where the service cable is joined to the distributor cable. This value will decrease significantly over only a short length of service cable."
Reply to why Pfc is 16kA in Installation Cert? in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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