faults | Page 3

faults

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  1. E

    Neutral to earth faults

    So since the advent of rcds, these have become more highlighted. This has been bugging me lately. In my mind the reason why neutral to earth faults are a problem is because the cpc has a smaller csa than the neutral Also if you lost the neutral at the supply then mains voltage would be...
  2. C

    Fault Finding?

    Alright, I recently sat my FICA and failed section E (Fault Diagnosis) and I have my resit next Monday but my problem is I've never actually done fault finding before. I've read about it and looked over some basic notes but my first real attempt at it was on the day of my test! I know that...
  3. Baker1988

    Fault finding

    Hi every one how are you all? I am starting fault finding when we start back at college after easter and I was just wondering if any one new any good books or websites to help with learning fault finding the way I would have to do it at college, any help would be great.
  4. L

    Glow-worm 18hxi intermittent fault

    Hi, Got a Glow-worm 18hxi boiler (6yrs old) with an intermittent fault. Cuts out with F1 or F4 code message. Sometimes runs for several days with no problem, then cuts out once or twice same day. Regularly serviced by our local plumber (also fitted it) but he cannot find the problem. Had the...
  5. T

    ebay van trouble

    Hi guys, Sold my old van on ebay the other day. £600 buy it now. Listed every known fault I could think of, said the usual stuff like no tyre kickers, haggling etc, price is final. Some guy bought it and turned up with his mate to collect on friday, from the word go he was checking everything...
  6. R

    solar pv Ground faults

    Hi.. I have just installed a 30kwp solar pv system. When doing the dc testing i noticed that there was a ground fault. Voltage between positive & earth and negative & earth on 1 string. This should be easily rectified but the inverter is not picking up a ground fault? Its an sma 15000tl. Also...
  7. S

    Neutral - Earth Faults

    This may be of interest... ?Neutral to Earth? faults | Professional Electrician & Installer and something else to think about... You've got a circuit additionally protected by an RCD, MCB off, why does chopping the cable with your conducting cutters trip the RCD?
  8. P

    Signing work off

    I've recently had a phone call off a potential client, asking for there recently refurbished house to be electrically signed off as they have sold the house. I think what's happened is they have had a electrician in to rewire it and modify the circuits but they wasn't part P. I am wondering if...
  9. J

    solar metering faults

    Hi I have long retired as an electrician,so all this solar is over my head.I had some 20 panels fitted to my roof in January this year,so a 3.8 KWT system.I was told that in daylight hours me and my old dutch would be able to use the electricity generated by the panels,that is using one bit of...
  10. P

    Neutral-Earth faults- Don't skip the cross-connection checks! Useless socket tester.

    Did a CU change recently, replacing a Wylex rewirable. Gobsmacked to find 3 sockets in one room on the ring with Earth and Neutral swopped. I suspected something amiss from the results of my initial L+N to E IR test when lots of things were still plugged in. The L/N or L/E cross-connection...
  11. G

    Neutral - Earth faults

    Had a quick look at a job which has it seems a neutal to earth fault. Set up TNC-S feeding DB with 5 MCBs, and 1 RCBO feeding lighting circuits. It was getting late and I was tired, so I suggested to the client you have a possible neutral to earth fault, and the circuit in question will need...
  12. G

    electrical faults

    Hello, I have been asked to undertake some work in a house, they require light firings changed, socket added in one bedroom and a new shower circuit (old one was plastered over). There are a number of visible faults on the electrical system in the house including sockets being run off the ccu...
  13. dez0178

    Can anyone explain the best way to fault find on a ring main.

    Hi, Can anyone help please. I am doing an assignment for college level 3. I am trying too understand how to find a fault on a ring main circuit. I have read about splitting the ring, finding which end has the fault test again until the fault is found. But could anyone explain step by step on how...
  14. P

    Samil Power inverter faults

    Hi all I have recently been installing samil power solarriver inverters and have some trouble the larger of the range seem to be finebut the smaller of the range have not been holding up so well if anyone has hadsimilar issues please get back to me so I can bounce some ideas off of you.
  15. P

    Question on Faults regarding RCBOs (Trainee)

    I've got a test and one of the key questions on it is as follows; 230v Single Phase Circuit is protected by a circuit breaker with integral RCD(RCBO), Justify which competent part of the device would operate for each of the following faults: A) Line to Earth Fault of approx. 2.3 Ω B) Line to...
  16. G

    help with 303 question city and guilds

    State TWO faults which may be found for EACH of the following.a) Luminaries b) Flexible cable/cords c) Wiring Can any one help me with this one?
  17. Floody

    More questions, fault finds, fault pictures, games etc.

    I personally think we need to get this forum a little more active. I appreciate that people work and are busy but I'd like to see more fault finding questions from our mentors, pictures with faults that we can identify, and maybe some sort of 'learning games' type of thing... Anyone? but not...
  18. S

    fault finding techniques !

    Hello all I've got a college assessment coming up about fault finding just wondering if any of you use certain techniques when fault finding ? Is there certain things you do first ? Obviously these are all pre determined faults which can be switched in and out please any suggestions will be...
  19. S

    AHU Faults

    I'm having a problem on an AHU that will not hit btemperature the actuators to htg coil are fully open and hot water is passing through but i am not getting my set point met by 8 degrees C, can anyone give me some advice please
  20. B

    Energetic LMR16 LED faults

    Anyone had any of these go faulty ? I did out my kitchen / Dining with 19 of them and 3 gone after less than 3 years "light" use.

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