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

D

davino

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can somone tell me how to mesure pfc for a domestic property need this asap!!!!!
thanks in advance
 
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M

Mike P

  • Thread Starter Thread Starter
  • #2
Disconect Main Earth. Put meter across Earth incoming (met) Connect other leads to Phase conductors do test. Then connect Earth and Neutral test leads together and connect to neutral phase conductor, connect the other lead to Line Phase conductor.
Test again. Wich ever is the highest reading in Ka record that on the test results.
Don't forget to re connect the main Met.
All these tests done with power on cons unit OFF
 
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F

frank12

  • Thread Starter Thread Starter
  • #3
You could also buy Guidance Notes 3 it will help you with all aspects of Testing & Inspecting
 
D

davino

  • Thread Starter Thread Starter
  • #4
Disconect Main Earth. Put meter across Earth incoming (met) Connect other leads to Phase conductors do test. Then connect Earth and Neutral test leads together and connect to neutral phase conductor, connect the other lead to Line Phase conductor.
Test again. Wich ever is the highest reading in Ka record that on the test results.
Don't forget to re connect the main Met.
All these tests done with power on cons unit OFF

under what function do i set the tester?? i have a metrel 2100 easytest...thanks

You could also buy Guidance Notes 3 it will help you with all aspects of Testing & Inspecting

thank frank i think i will!!
 
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M

Mike P

  • Thread Starter Thread Starter
  • #5
Sorry not familiar with that test set. I use Fluke 1653. But when I had Robin test kit
if I remember correctly it was the loop meter that was used for Ze and Prospective fault current. I'm sure if that's wrong a user of Robin kit will correct me
 
D

davino

  • Thread Starter Thread Starter
  • #6
is there any illlustrations avaiable on the web that i could look at to help me ?
 
W

WarrenG

  • Thread Starter Thread Starter
  • #7
Davino, PM me with your email, I have some good illustrations for you.
 
C

city spark

  • Thread Starter Thread Starter
  • #10
set your earth fault loop impedance tester to 20KA and dependent on whether you have a 2 lead or 3 lead tester you connect (3lead) green and black to neutral and red to live this is your potential short circuit current (pssc) then connect green and black to earth and red to live this is your prospective earth fault current (pefc)or (pfc) it states that you must determine the pefc and pssc at every relevant point in the installation this can be done by calculation as laney06 describes or measurement or enquiry hope that helps you.
 
1

12345aob

  • Thread Starter Thread Starter
  • #11
Disconect Main Earth. Put meter across Earth incoming (met) Connect other leads to Phase conductors do test. Then connect Earth and Neutral test leads together and connect to neutral phase conductor, connect the other lead to Line Phase conductor.
Test again. Wich ever is the highest reading in Ka record that on the test results.
Don't forget to re connect the main Met.
All these tests done with power on cons unit OFF

Why do you need to Disconect Main Earth for the pefc test?
 
U

uksel

  • Thread Starter Thread Starter
  • #13
Ohms law applies to DC supply & not AC

although the ballpark figure won't be far off, it still isn't entirely accurate
 
J

jimes

  • Thread Starter Thread Starter
  • #14
ohms law is ohms law ac or dc and also rf
 
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Reply to Prospective fault current in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

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