polarity | Page 5

polarity

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  1. C

    Level 3 Testing. Is this right?

    Hello I have my 302 Practical exam (testing) on Wednesday. I just wanted to know if I am right in what I'm doing. 1. First you would do the Testing of the Protective conductors. Using the R2 method (Long Lead) 2. Then you would do the R1+R2 Tests of all your circuits. Connecting Live and Earth...
  2. A

    continuity of radial circuit conductors

    Hi doing R1 + R2 on lighting circuit green probe on cpc Red probe on Switch line (switch ON) or Line.Which is correct? Switch line to confirm polarity? .took readings on both .why is switch line reading higher. Thank you for any replies. Angus
  3. K

    polarity test

    Hi, I have just done a IEC check. It is a normal plug plugged into the mains, then on the other end, it's been wired up to a double socket. It passed the earth, and insulation but failed the polarity test. Im gathering that means its not wired correctly and needs to be taken out of service until...
  4. S

    Polarity

    ok question time again... Explain why the documented results of polarity tests are not a numerical value. i know its a tick but why????????
  5. S

    Head Scratching time lighting fault

    Been doing an eicr today, went to do an R1+R2 on a lighting circuit and got no reading between earth and live but neutral to earth was 1.36 ohms. Straight away thought reversed polarity, but the luminair was working correctly before we arrived, so i put the power back on and checked the voltage...
  6. N

    Questions regarding polarity and continuity for a light circuit.

    I am trying to find out where on the light switch or the celling rose of a light is the test for continuity and polarity are carried out? If continuity is carried out for a light circuit then where the probes connect to? is it on the switch line and the cpc at the ceiling rose or the brown...
  7. N

    Question regarding PFC, Ze, and live polarity tests. Please help.

    When carrying out the tests: live polarity of the supply, Ze, and PFC on a TN-s single phase system, what happens to the double pole main switch? is it off or on? Many Thanks.
  8. N

    Question regarding live polarity test. Please help.

    I am trying to carry out live polarity test to test correct polarity of the supply. The system is TN-S and single phase. My question is do i turn main switch off? Where on the main switch does the voltage indicator leads go? Is it on the top side of the main switch (Supply) or bottom (Feed)...
  9. A

    Megger 1553 - possibly damaged from PFC test

    Hey, I have a Megger 1553 and lent it to a friend, who is an experienced spark with 2391 and good knowledge/experience of testing. However, friend carried out PFC test using 3 leads, even though PFC should be carried out using 2 leads on this unit. Since PFC was carried out incorrectly the...
  10. M

    polarity warning on IMO isolators

    The guy that works for me doing some of the electrical bits connected one of the new IMO isolators the other day. When I checked on commisioning the polarity was wrong. rather than connecting in a stright line through the isolator the connection goes accross, so the top left input is continuous...
  11. G

    polarity

    Is only way to test polarity with voltage meter and see if - sign cones up? Also can u install into rcd side of house fuse box with other circuits in it? Gordon
  12. S

    Polarity puzzle

    I recently came a cross a piece of 3core swa brown black grey, that had been attatched to a piece of 2 core red black swa. I have confirmed that the brown conductor is attached to the red conductor and is indeed the line conductor. How can i determine which core, either black or grey has been...
  13. B

    PV system Polarity

    I'm in a panic as assessment in 2 days. It appears I have the polarity wrong at the inverter this was corrected in the DC isolator and it's fine now however where should I correct it. I have used red and black cables so can I just use tape at the switch so the colours are right or do I need to...
  14. R

    Which socket tester?

    Trying to decide which socket tester to buy, I like the Socket and See 32 / 34 /36. I already have a Megger 1553 which has RCD and Zs test. The highest model seems to detect E/N incorrect polarity is this only if the installation has an RCD?
  15. W

    Reversed Polarity

    Hi all, Went to wire up a electric shower today in a block of flats only about 8 years old. It turned out that the main tails were the wrong way round in the consumer unit making all the neutral bar live etc!! So much for initial verification, inspection and testing! Must have been like it...
  16. S

    Fluke 1653B supply polarity

    I used my fluke for the first time today practicing on a test board I built up for 2391 paractical exam. I went through all the tests and got to the live tests. First test was supply polarity and I am getting a reversed L-N reading on the display. L-E read fine, N-E also reads fine...
  17. P

    steca invertor not working

    proud moment of switch on went down like a damp match this pm. Steca invertor should be showing flashing or constant LED neither showing. I am puzzled have changed the polarity of invertor. Supplier says that sometimes the invertor takes time to fire up. It is is very overcast outside so he...
  18. P

    Polarity of Invertor Connections

    Just connected up invertor of first system thought I woudl check with supplier about the polarity of of connections from the dc Isolator to the invertor the technical support told me that I would have to remember in what order the cables came off the array in order to get them the right way...
  19. G

    RCCB polarity

    Some RCCBs have L on the left and some on the right, i.e. printed on the case. Is there a reason for this other than that is the way in which that brand of CU is configured? Does it matter to the internal workings of the device which pole is put on which side? Thanks.
  20. P

    Recognising a duff panel

    Theory's great but it's only when a problem comes up you really start to learn things..... My relatively low number of installs to date have gone to plan so I'm hoping a few of you out there have hit more problems than me. Just put up a 14-module rooftop, two strings of 7x245W panels. Al lthe...

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