measurement

  1. E

    R2 measurement.

    Is there any other way to take this measurent apart from using a long lead????
  2. H

    Earth leakage measurement

    Would someone please remind me how I can do this again? I know if I clamp the neutral only it will give me a reading stating how out of balance the phases are but do I clamp neutral and earth together at the same time to obtain earth leakage current?
  3. L

    Ze testing

    evening i am fillling out my logbook and am asked what the purose of doing a Ze test is can anyone tell me please thanks
  4. K

    Advise on purchasing test and measurement

    Hi all. I'm in the market for some testing kit for domestic install purposes and would really appreciate some input as to places to purchase (S London) or online and what models/manufacturers are preffered. Badly need to upgrade my DMM and was looking into the fluke 11X range Also not looking...
  5. F

    Ipfc/Ipsc measurement at 2nd distribution board

    Hi, My first post - hope someone can help. I need to test the prospective fault current at a garage consumer unit. The unit is supplied from an RCBO in the main consumer unit. I intend to carry out the test at the incoming terminals of the garage consumer unit switch with everything switched...
  6. C

    PFC measurement?

    Hi all, have read various threads on this forum regarding PFC measurement but still need a little advice please. Does anyone have a definitive calculation for PFC in ac single phase supplies? I have just measured PFC in a particular SP domestic installation and I get a reading of 549 amps...
  7. U

    megger 1553

    hi all.........need a few pointers just purchased a 1553 and wondered about the pscc, pefc, pfc measurement? Am i right in saying that for pscc measurement: hi pfc range on loop test red to phase black to n pefc measurement: red to phase black to n green to cpc highest reading is...
  8. D

    Continuity measurement

    Hi all, I asked the wrong question this morning (it was early) so will try again, If you a have a circuit where you can't easily measure r1 + r2 continuity, such as a circuit to a hob ignition system (no obvious points to probe), is it ok to determine by calculation this measurement using table...
  9. S

    circuit resistance

    could someone give me some help calculating a circuit resistance for a single phase circuit as it would be entered on a minor works cert if tested? the circuit in question is a supply from a 2.5mm T&E 30m long going to fused spur then into 1.5 T&E 15m Long. 1st is the calculation done as...
  10. E

    Zs measurement

    For some reason i keep getting confused about the maxium Zs permitted in the 7671 regs. I have just finished a new rewire on a TT system. The Ze was 14.5 ohms so therefore i assume the Rn is 14.5 ohms. But i am getting confused with what maxium i am allowed on the Zs because when tested at each...
  11. S

    Turn up to work with one of these!

    ...and see the bosses face!!! he he VINTAGE MEGGER UNIVERSAL EARTH RESISTANCE TESTER on eBay, also Meters, Test Measurement Equipment, Electrical Test Equipment, Business, Office Industrial (end time 22-Nov-08 20:13:05 GMT)

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