fault

  1. P

    Earth fault on water pump

    Alright folks, First time poster but im at my wits end! Got a mobile welfare unit which has a small 3kw hand wash in it. The water to the hand wash is fed from a small pump which comes on when the sensor for the hand wash is activated. There is a flying earth lead from the pump which is now...
  2. T

    LED Tape fault help

    Hi Can anyone enlighten me of what has caused this (see attachment ) ? I'm Thinking water but hoping its not so I can take the tape back
  3. R

    Single core and earth lighting fault

    Could the better and wiser assist with an odd one...? I've just finished a big CU swap on a 1950's house that uses single core & earth lighting circuits. All but one of these are fine, but the faulty one is pretty funky; There are 3 accessories on this circuit in 3 separate rooms. The first...
  4. K

    Intermittent Ring fault! Any advice please.

    Hello all, I was hoping for some advice on this ring fault I have come across. It has been intermittent for about 2 months now. It is a converted church to a children and family centre. Installation is within 10-15 years. TN-C-S supply. The fault is on a 32A type C RCBO 30ma which supplys 12...
  5. B

    External lighting fault

    Fault on external lighting roughly 12 lights around a building, RCBO tripping, my tester only goes to 200 Megger Ohms L-N is 0 Megger N-E is greater than 200 Megger L-E is greater than 200 Megger LN-E is 150 Megger Now tested insulation from board and roughly found the middle light with 1...
  6. Diver233

    - Prospective fault current test 2391

    Hello all, I’m now overthinking the - Prospective fault current test for the 2391 practical, the exam boards will be a 3 phase and a single phase board. Do I test the three phase board and double the highest and use that for both DB’s or do I do one for 3 phase db1 and sep one for single phase db2
  7. S

    Fire alarm fault zone advice

    Hi guys, I haven't done much in the past with fire alarms but am starting to get more work leads with them so it is something I want to get into. Does anybody have a fire alarm zone fault checklist they wouldn't mind sharing please and what are the most common FA panel keys? By the looks of...
  8. happyhippydad

    Difficult fault to find?

    I have come across a fault that I am struggling to find. I cant remember being stumped like this before as I like fault finding and have always found the fault before. 6A MCB is tripping on lights. It sometimes trips the moment it is switched on and sometimes takes up to 30 mins. There is no...
  9. L

    Domestic Pre Payment meter at fault?

    Hi hope someone can give me some advice on what to do I think I'm being overcharged according to my supplier I'm using 6300 KWH a year costing me around £60 a month on electric I have no electric heaters on its all gas no electric shower all i have running is my pc 24/7 and tv on most hours...
  10. D

    Altered ring main, now a DIFFERENT circuit is not working?

    I’ve just altered a ring main by taking 1 leg out of the board and taking it to a spur (then taking a leg back), to add a socket in. After doing so I’ve turned the board back on and everything is working as it should, other than cooker circuit (A radial feeding the cooker/hob, extractor fan and...
  11. D

    Bizarre fault today immersion timer

    got a phone call from my brother at about 1.30pm to say his immersion timer had caught fire and completely melted. I thought he was exaggerating so popped round to take a look. And yep it had completely melted into a big ball of moulded black sticky plastic...:eek: This timer was fitted when he...
  12. D

    Fault on underfloor heating mat.

    Hi All I have a fault on an underfloor heating mat which is as follows L-N no continuity (should be around 200 ohms) N-E short circuit L-E clear I need to find the exact location of the fault so I can take a tile up to repair it, I have thought about hiring a thermal imaging camera, just...
  13. M

    Industrial Excessive earth fault loop impedance

    I work for a hotel chain and recently we’ve had our 5 yearly test they have 8 circuits from our LV panel with excessive loop impedance readings !! So apart from either introducing an rcd or dropping mcb ratings or type is there any other way of achieving satisfactory readings ?? Also if I have a...
  14. B

    2357 608 Fault diagnosis

    I have just completed my 607 test and inspection exams and we are now moving onto 608 fault diagnosis, I have been searching the internet for 608 learning and exam practice but the only acceptable source I have come across is Swindon massive, however having studying from that website for 607...
  15. D

    Gaggenau induction hob fault - code Ci9 ADB R

    Gaggenau induction hob fault - code Ci9 ADB R Today, 08:29 PM Dear All, Does anyone have any experience of the induction hob range made by the company Gaggenau? I have a customer who has the above fault being displayed and now the hob after struggling on and off for a few months has finally...
  16. K

    Aqualisa Quartz Electric Shower Fault - Identify Part

    Hi All I have an issue with my shower and I suspect it's the solenoid. The original fault is that the shower either wouldn't switch on at all, or it very briefly powers on, see video I removed the front panel and as you can see below, manually pressing the plastic arm starts the water...
  17. P

    Am2 testing: Fault finding

    Hello everyone, I have finished my 3 years at college and now have my AM2 tomorrow. I have confident in the installation but need some help on a bit of the testing and fault finding. We will be usin a megger tester. How do I carry out PEFC and then PSSC on a three phase DB. Also could do...
  18. B

    BS 7671 max surface temperature under fault condition ???

    Can anyone give me some clarification on the following. I am installing some Osram Planon Plus led light panels into a temporary building and have been told the transformers need to housed in an enclosure as they do not have the correct markings for BS7671 "max surface temperature under fault...
  19. rolyberkin

    Fault on lighting circuit - What am I missing?

    I had a 10 minute look at an existing fault yesterday as walking out of a customers house as it was way past beer o'clock, the circuit is from a dual RCD board. Serves lighting in a loft conversion with balcony (outside lights) en suit, downlights shaver socket, bathroom fan and central pendant...
  20. G

    Strange Fault on a Farm!

    Hi Guys I am new to the Forum so here goes...... We have been called to a Farm which is 40+ years old, it is a TT 3 phase supply and has a 100mA main RCD switch at the incoming supply. There is a main DB in the barn and out of that is an SWA sub main which feeds a stable with only one...
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