polarity

polarity

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  1. S

    Type S RCD Polarity Clarification

    Given the RCD pictured below With the manufacturers instructions here: Am i right in interpreting that as well as being able to bring the incoming feeds into the bottom, i can also switch the LIVE and Neutral sides over, so that this arrangement would be possible? Forigve the crudity of...
  2. D

    RCD polarity testing

    Hi, I've recently done a PAT course after the large company I work at discovered we have a Deltapat 3309 kit tucked away. I'm actually an automotive electrician maintaining the electric forklifts and pallet shuttle 'robots' at the factory but they decided to expand my skills which I appreciate...
  3. baldelectrician

    Serious issue - missed by people

    Went to an EICR yesterday to a let property that was tested 5 years ago (and apparently passed) 🤭 See how long it takes you to notice - the red box will be a give away 😀 The Wylex RCD was also noted as a C3 Clue: Cilla Black
  4. I

    GFCI issue that is not related to the circuit it's protecting.

    Having lost my father in law many years ago, an electrician and electrical engineer, I'm now at a loss for a sounding board for any issue that comes up that I get stumped with. I am hoping the fine folks here may be of some assistance. I am having a GFCI/ AFCI issue in my sub panel...
  5. J

    Excessive Electrical Bill

    Hi, I always receive high electrical bills average £180/month, I have monitored usage, switched appliances off, reduced usage by not using appliances; i.e. dishwasher. Nothing I do seems to reduce the amount of the electric bill. I have switched supplier, always make sure tariff is discounted...
  6. Algarve Sparky

    Help with solar pv polarity

    So I have completed a rewire on a house that had stood empty for several years, vandals had stripped the place including pulling all of the cables from the tubes. So rewire was a case of replacing cables, board, sockets and switches. However the place is no longer connected to the electricity...
  7. S

    TP & N Continuity & Polarity

    Just practicing for my AM2. When testing a 3P and N socket, as I understand, R1 to R2 is CPC to any live (L1, L2, L3) to prove continuity, but how do you prove polarity?
  8. P

    TV Lift Reverse Polarity Motor and Limit Switches perhaps?

    Hi. I want to control a TV Lift from a home automation system. Its hasn't got any standard way of doing this and the person setting the home automation needs to know just a few things to get it working. Ive had an electrician look at the control box and motor, he's figured out that the...
  9. M

    Polarity testing supply

    I'm probably missing something obvious here but if the polarity is reversed upstream of the cutout How are they getting 230v between N-E ? Surely they're still linked at the cutout ?
  10. S

    Does polarity matter for an RCD?

    Hi all, I recently was given an old 2 pole Legrand RCD meant for the European market but it doesn't have any indication of which side is neutral and live, and also doesn't indicate which side the supply and load go into. A picture is attached. I've looked at the data sheet which doesn't provide...
  11. M

    MCBs Polarity ?

    Quick question Am I right in thinking that all standard SP MCBs are non -polarized ie: supply can enter top or bottom of unless they're marked with line/load markings Also the 1 and 2 markings on MCBs ,what does that indicate ?
  12. L

    Head went funny.... Reverse polarity showed up and still after swapping cables ?

    Maybe lack of coffee etc ! Voltage also dropped to 140 for a bit . New ring . wired up correctly but indicated "reverse " . Could not be possible . Then tested other way and same thing ! Its a luxury apartment and only in there fitting longe plates. Building sparks arrived and fiddled in...
  13. W

    G4 LED's & Aurora AU-LED16T 12v constant 16W LED Driver, does it matter about the polarity ?

    Using these lights (wired in parallel) 6 x 2W is ok to use a 12V constant voltage 16W led driver Aurora AU-LED16T. My question is they are a G4 fitting which goes, either way, does the polarity of the bulb cause an issue or do electronics inside take care of this. Many thanks in advance.
  14. H

    230v 3 pin commando polarity tester

    Is there a 230v 3 pin commando polarity tester that is a reasonable price? I have seen the Martindale one at £45.00 Ideally i would like one about £15.00 /£ 20.00. I am just fixing a socket outside for my camper van to keep the topped up in the winter. The solar panels are ok for the summer. I...
  15. H

    Verifying polarity on radial ccts

    Hi I've got my 2391 assessment at the end of the week and I've managed to confuse myself (and not for the first time) I get how performing R1+R2 and R1+Rn on a ring also confirms polarity. The thing that is confusing me is how does performing only a R1+R2 on a radial socket cct (and operating...
  16. A

    Polarity test failure on SPD extension leads

    Evening all, This has probably been answered somewhere here, but in case it hasn't... I have a Fluke 6500-2 and had trouble testing SPD extension leads as you cannot drop the voltage to 250V using the IEC lead test button. I found a way to set up an auto test sequence to include EB and 250V...
  17. mak

    Couple of questions, r1r2, Zs and polarity

    On a ring main we test r1r2 at every outlet since there is no end of the circuit and every test should return same-ish figure unless there is a loose connection or socket is on a spur, right? What about the the radial circuit? Other than to check polarity is there a point to test anywhere other...
  18. P

    How common is reversed polarity?

    Looking over the best practice guide to electrical inspection condition reporting the C1 "danger present" conditions are basically exposed live parts or reversed polarity. I guess the seriousness of reversed polarity is the lack of any meaningful over-current protection for faults to earth...
  19. D

    Polarity Test - Extension Lead (surge protection) - Failed

    Hi all, This has got me stumped as it's the first time in 8 years this has happened. I undertook a 250v test on a brand new recently purchased Surge Protection extension lead - all is well but on each of the 6 sockets it failed the Polarity Test. Tested the IEC Lead and all was fine so not that...
  20. S

    UK Polarity voltage warning ⚠️

    Hello, Can anyone tell me what would cause a polarity voltage warning to occur on my kewtech KT63 tester whilst testing doing an earth loop impedance test? How’s it fixed if so? Thanks

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