Quote:
Originally Posted by treelectric  Yes it does help, especially as I wasn't sure if I could calculate Zs on non socket outlets or had to measure them. Your advice about finishing the inspection in 30 min does give me something to aim for, as that was the problem when I did it.
I was told I could calculate pscc and pefc if I wanted. |
Ok, if you have Ze, then you can calculate PEFC, but how are you gonna calculate PSCC? You dont know the impedence of the line to neutral loop so dont see how, (unless its TNCS of course!) but even then, only on the three phase board.
Rememebr you need PFC's on both boards, so if you are gonna calculate PEFC on the sub board, then its Ze plus R1+R2 of the submain cable supplying the sub board.- but even if it is TNCS you would need Rn of the submain cable to be able to calculate PSCC. Personally, I would always measure PFC's, it only takes two minuites!
With the Zs for all the non s/o circuits, C&G specifically say that you can calculate OR measure
and good luck!