polarity

  1. gazdkw82

    Three phase polarity test

    I have my AM2s coming up and i am a little confused to the live polarity test on a 3 phase circuit. It's the first live test and I dont want to fail on what is a simple test. I know how to perform a live polarity test on a single phase circuit but unsure on the procesure for 3 phase. Is it just...
  2. B

    Reverse polarity at socket outlets

    Had some line/neutral reverse polarity today at a job instead of tripping RCD/MCB it’s just melted socket outlet how come RCD/MCB didn’t trip? RCD tested fine??
  3. J

    coolant temp sensor > is polarity important?

    Does it matter which way you connect the 2 wires to an engine's coolant temperature sensor? Does the thermistor inside the sensor have polarity? I do not know the pinouts on the car's temperature sensor and I do not want to risk damaging the car's computer. Thanks in advance.
  4. C

    reverse polarity on appliance socket

    Carried out an eicr and noticed x2 double sockets have reverse polarity that supply a frying machine at high level. After correcting the reverse polarity on the two sockets i plugged the fryer back in and the circuit MCB tripped out and the appliance popped. I am unable to open the fryer up as...
  5. Gavin John Hyde

    Reversed polarity - who to blame?

    Been on a job in Warmley this afternoon, customer told by Knowhow/curry's that she has reversed polarity so couldnt connect washing machine. worryingly all faceplates were metal so not ideal! Go out and 230 between neutral and earth,nothing between line and earth. called western power who sent...
  6. HappyHippyDad

    Is the Steeple RCD polarity sensitive?

    Evening all. My customer has a series E consumer unit which has a 100mA MK RCD as the main switch. I am adding a socket to the socket circuit on this board so need to give it 30mA protection. I happen to have a 30mA Steeple RCD for a series E CU (I collect as many different CU's as I can)...
  7. H

    Crossed Polarity smart meter into mains

    hello! Just looking for some advise, Basically we had an electrician fitting a new shower and lights yesterday, he tested a light socket before touching it (after turning all fuses off) and it was live... come to realisation an electrician working on behalf of an energy supplier had fitted the...
  8. S

    Combi Boiler reverse polarity

    Hi sparks. Gas safe plumber here please be gentle. Just went to a boiler breakdown. I traced the fault to the room thermostat so I linked it out on the pcb board in the boiler. The boiler is working fine now. 2 year old B&Q combi. While I was there I checked with my multimeter the supply...
  9. L

    Neutral & live reverse polarity

    I’m not an electrician so apologies if my terminology is off, but I’m looking for some help. 3 months ago we had solar panels installed and we had our electricity company out today to install a smartmeter. The first thing they did was check the electrics were ok before they started and they...
  10. C

    Working live

    How many sparks would work in a square D KQ 3phase DB board if it was LIVE i was putting a new mcb in a live DB and it blown the MCCB at section board i tested between phases and there was no polarity between any conductors switched the MCCB and it tripped again WHAT COULD OF HAPPENED
  11. Y

    Problems with Series/ Parallel strings not adding ampage.

    Hi Guys, im hoping someone can help me. I have recently installed 3.2kw system for an offgrid job. The problem im getting is that im only ever seeing around 300 watts solar generation for the whole system. We have used 10 x Canadian Solar 320 watt panels Voc for the panel is 44.9 and the ISC IS...
  12. S

    polarity problem

    adding to a lighting circuit before i started did a polarity test at jb in loft (acting as Rose) found the following L - N 230v L - CPC 24v N - CPC Ov cant figure it out any advice where to start looking would be apriciated
  13. captaincaveman

    50 volts between nuetral & earth - Lighting/ fluescents

    Hello beautiful people. Quick one for anyone who may have an idea: Attended job today with a room with 2x 5ft fluescents not working and found 50v between N-E. I did basic tests on the fittings (continuity, ir, etc) - all ok. main earth and everything else ok. Checked the light nearest the...
  14. M

    Reverse polarity when PV inverter switched on!?

    Hi all Very strange situation this evening. I installed a PV system around a year ago and has been working fine. Called out today as the generation meter had stopped increasing. Customers been away and only arrived back today. Western Power have recently put up a new pole in the customers...
  15. D

    Socket & See tester

    Evening, I use a Socket & See tester instrument to provide a means of confirming safe isolation before working on boilers. Can anyone explain why I am required to press the touch pad at the bottom of the test instrument in order for it to perform a polarity test? I understand what polarity...
    • Dannydandan
    • Thread
    • instrument isolation polarity socket tester
    • Replies: 16
    • Forum: UK Electrical Forum
  16. J

    MK/BG Polarity sensitive

    As above are rcds that fit on duel rcd boards polarity sensitive? Eg can they be installed with the busbar on ten other side?? Sent from my iPhone using Tapatalk
  17. W

    Switch Polarity Question.

    During fault finding I came across a switch wire and a perm wire connected the wrong way would this still be known as reversed polarity ? As the connections are reversed?
  18. N

    Testing Zs on an IPS system?

    Hi all, Does anyone know how to test the Earth Fault Loop Impedance on a monitored circuit such as IPS? I have found in the past that even a Martindale Socket Voltage Tester can trip out the circuit as it is monitored. I also found that no matter which way the neutral and line test probes...
    • Noob2013
    • Thread
    • circuit isolated polarity system testing
    • Replies: 10
    • Forum: UK Electrical Forum
  19. G

    Polarity question?

    Hi Guys, seem to have a bit of brain fade today & just want to check on something before i start. When connecting the pv array to the inverter do i connect the +ve side of the array to the +ve terminal of the inverter or vice-versa? I know daft but there you go! Thanks
  20. V

    which polarity

    Hi everyone, I have a Bissell rechargeable floor sweeper and have misplaced charger, I have a universal ac/dc charger that you select your output voltage that I can use as temp, I have to plug the correct connector on the end and can have pos or neg polarity on the centre tip, problem is I...
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