polarity | Page 6

polarity

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  1. S

    Dangerous reverse polarity on meter tails

    I have today come accross my first polarity problem. while checking a socket i found it was showing reverse polarity with L and N. After checkig behind the socket and all other sockets on the same ring all were correctly wired. I checked the polarity of L and N at the consumer unit and although...
  2. C

    24Volts

    Hi, just been out to look at a light which has stopped working, it's in a little cupboard and is a one way on a sw, the woman says it's worked for years but gone all of a sudden, so I tested at sw and there is 240v yet only 24 at fitting. She sed she had some downlighters put in a few weeks ago...
  3. B

    Domestic Wiring Problems - Advice Needed Please!

    Hi First of all I am not an electrician! When using power tools recently I have been getting shocks from almost everything! I bought a small 3 pin 240v plug-in tester to attempt to see if this would show that there was no earth! What this did show was that I have reverse polarity. Further...
  4. U

    Polarity on a 3 phase circuit

    When testing a 3 phase + neutral circuit the polarity box would get ticked on the test result sheet ..... when testing a 3 phase circuit with no neutral does the polarity box still get ticked ?
  5. R

    Reverse Polarity blow PCB? Worcester boiler with overun

    Ok guys had a day and half today....Y plan Honeywell room stat, 7 day prog 2 channel. Worcester boiler with over run...... Some how the mains L/N got cross and had few 3 amp fuses blow in spur before we established issue...boiler fuse was ok though and once established that a donkey had...
  6. W

    reversed polarity

    went to add a socket to a circuit the other day and when testing found that the circuit had reversed polarity, i taught this would trip the rcd but it didn, so does reversed polarity mean the rcd wont trip under a fault
  7. G

    battery chargers keep blowing?

    Hi all, saw my brother over Xmas and he has a problem with battery chargers fusing out when he turns them on, now blown 3 different ones. All other things work ok. Any suggestions would be helpfull before i call round to look, thanks in advance. Graham
  8. D

    Polarity of supply!

    Simple one but want to make sure I'm getting this right. How would you check the polarity of the supply?
  9. S

    fluke polarity checker

    hi, just a quick question, does anyone know how the fluke 1652b checks polarity and where is it displayed on the machine cheers
  10. H

    Reverse Polarity

    Apologies for intruding on your website - I am NOT an electician!! I would like some advice - a couple of weeks ago a MeterPlus employee came to fit a new meter in my house - he spotted a fault - said it was reverse polarity - the whole house was affected & told me to get an electrician to sort...
  11. C

    Polarity

    How do you test for polarity thanx
  12. P

    Reverse Polarity

    Need a sanity check, I have a customer issue... installed a customer supplied consumer unit as they had the supply brought into the basement, so 3 ciurcuits had to be extended etc tested it all issued certificates etc. all fine. however halfway through the day the customer asked when was i...
  13. N

    Radia Circuit test

    Heya peeps, I got my Level 3 2330 Inspection and Testing practical coming up soon, and I'm a bit confused about Radial circuit testing. Looking at the booths, there's 3 radial circuits on one distribution board, each circuit having one socket. When I conduct my continuity test, can the...
  14. sparks1234

    Baxi Boiler fuses

    We have today connected up a central heating system and the boiler was a wall hung Baxi, all it needed was a live, switchline , neutral and earth. I was very surprised to see that they had fuses the neutral. Anyone else come across other boilers with this?
  15. C

    Faults

    i have wired in a ring circuit and there is power there, but it doesnt work when anything is plugged in. another fault is that the landing light doesnt work, this is a 2 way on stairs. problem is, it doesnt work until the down stairs lights mcb is switched off and upstairs is on. again if the...
  16. E

    Reverse polarity

    My dismountable camper - which I carry on a Nissan pick-up - has an electrical panel which carries all the fuses, trip switches, pump switch, charger switch etc. It also has a light which shows if the polarity is reversed. I can't understand why, because I thought AC current changes polarity...
  17. S

    How to convert tip polarity of DC adaptor please?

    Hi I have a DJ mixer I need a replacement power supply for, I've managed to get an adaptor with the correct rating (15V 500mA), the only problem is, like most, it has positive tip polarity and I need negative tip polarity for the mixer... What is the best way to convert it please? I have...
  18. X

    LED Light Strips

    Hi Guys Im no electrician but hope you can help. Ive recently fitted led light strips to my car. I had them on my prev car with no probs. Just disconnected the side lights and joined the 2 wires up! Done the same on my Saab and when they engine is running with the lights turned off, they flash...
  19. G

    Just started testing,help please!

    Hello all, New to testing so be gentle please. I understand the basics of continuity and ins resistance tests on rings and radials. What I am not sure about is polarity. At what point am I testing for polarity,what does it prove and how do I do it? SIMPLE answers would be much appreciated...
  20. L

    YOUR, testing method's

    I'm just wanting to find out, what are your testing methods, as i dont believe that everyone who tests, does it in the correct order. So then...... coff up and tell us what you miss out and what you do first step by step ;) do you have any habits, tips n tricks..... regards luke

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