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  1. H

    Short circuit bypasses mcb and trips submain mcb

    Good evening A cable was loose in a ceiling void causing a short circuit this didn't trip the 10 amp 6ka type b mcb but tripped the 50 amp type b 6ka mcb that supplied that board back at the mains. I am wondering why this occurred other than me thinking the local protection isn't very...
  2. M

    Short Circuit Line to Neutral where does the current go after the consumer unit?

    Short Circuit Line to Neutral where does the Current go after the consumer Unit? I assume it goes back to the Sub-Station where it is earthed but i'm trying to find this written in a official book etc but finding nothing. Thanks
  3. S

    monitor AORUS AD27QD - short circuit and tripped breaker.

    Hello. I had a good monitor AORUS AD27QD. Yesterday when i was sleep i left monitor on like always. When i woke in morning there was not power in house. Something tripped breaker/fuse. When i turn up breaker and power back in,monitor just refused to turn on. So monitor i guess tripped breaker...
  4. R

    Short Circuit Fault On Honeywell Flex 100 alarm

    Hey, We are putting in a Honeywell flex alarm. It's all wired in (following the manual). The problem is that all the sensors are coming up as having a short circuit and I can't work out why. I've wired it up with my friend (who is an electrician) and we really can't work out the problem...
  5. Stevie g

    When does micc short or go bang

    Micc readings on a 4 core 10 mm are 4 cores to earth 1.09 ohms and between cores 1.70 ohms tested at 500volts cable supplies main DB and off peak DB both backed up by 60 A bs88 fuse, what's the resistance reading likely to be before it goes bang?
  6. T

    3way light switch, 1 light works 2 don’t help

    Have a 3 way light switch (three separate lights) one light works (middle switch) 2 don’t. Think that the 2 that don’t work shorted out when a multi socket plug was inserted in adjacent room. That plug still works. Anyone got any ideas?
  7. JD6400

    Electrician Short / long term vacancy Buckinghamshire

    Hi, and thank you for looking! We are a small company which has been LTD for around 13 years , our work load is mostly local to mid / north Bucks and includes agricultural , equestrian , new builds and maintenance for local country estates . We also complete large equestrian yards across the...
  8. L

    UK electrical helper looking for experience.

    Hello everyone , I have just completed a course that gives me the qualifications below: 18th edition wiring regs Portable appliance testing level 3 qcf Part P Domestic Installer Level 2 I have done some practical but not as much to call myself a sparky. I would like to know how to go...
  9. C

    Short circuit compliance on high Zs readings

    Would you divide the 5.13 ohms by 4. I personally don’t think so. Also the R1 /Rn short circuit resistances are different from the usual R1 /R2 measurements. Found those in an electrical book by,that man. The Zs on this circuit was above the permitted figure,so just had a play around to see if...
  10. UKMeterman

    Uk power networks have a 71 year old linesman, short film

    UKPN have a 71 year old linesman who is still on the poles Being an overhead linesman is 'a different world' - https://www.bbc.co.uk/news/av/uk-england-kent-50347091/the-dover-man-maintaining-power-lines-for-over-50-years
  11. C

    PIR parallel to Switch makes short circuit

    Hi, I have lighting in the bathroom plus an extractor fan. There is one switch for the lights and one switch higher up for the fan. I installed a PIR in the bathroom and wnated it to turn both lighting and the fan in parallel to the switch. I fed the PIR from the fan's permanent F and took the...
  12. S

    Help finding fault after a short Circuit( Com with Neutral )

    Hi there Im reaching out here as I have given up trying and couldn't find a local electrician to help today . so the issue . after painting the wall I was try to fit the light switch back into the wall and somehow the com cable touched the metal surround on the wall. the lighting RCBO...
  13. N

    Why would spike lights trip an MCB as if a dead short is present ?

    Just finished installing 20 x spike lights in a customers front garden. 2.5mm SWA ran from existing junction box feeding existing fence lights. All pulling no where near 1A in total. When all connected and wiring tested, went to switch on MCB and it popped. Rendering the MCB useless as if L-N...
  14. F

    System fault on panel 001 short/ circuit

    Please how do i start to check for system fault on panel short circuit. I was able to solve this problem before but now it's taking like forever and am getting frustrated please help. I am working on a Esser IQ 8000 control FACP.
  15. F

    Help with a possible short

    Diagnosing a faulty ABS module. Manual say to remove ground cable from battery, disconnect abs harness, and probe for continuity between power pin 15/18 and ground. Multi meter shows 1.5K Ω and 7K Ω respectively. Is this an actual short?
  16. C

    underground ducting in short lengths

    Anyone know where I can get 32mm ID/37mm OD underground electric cable ducting from in shorter lengths, cheapest I found is amazon but everywhere seems to do minimum 50m, I only need 15m and rarely use it.
  17. H

    Dead short readings on TNS

    Evening all A few weeks ago we were doing an Eicr and were getting dead shorts on every circuit between neutral and earth. In the end it was believed that the fault might actually stem from the incoming earth. I understand you will get a short if it was tncs but not usually tns. However the...
  18. Barnaby Stedman

    SWA - too short!!!!!!!!!!!!!!!!!

    been working on site today - came across someones bad calculations - there is 6mm swa in a ducting underground and it only comes out of the ducting at one end! i managed to dig down to the ducting and found the other end buried underground. So what is the best way of connecting two pieces of...
  19. Pretty Mouth

    Short circuit disconnection times

    Could someone shed some light on the following please? 411.3.2.1 implies that the 5s / 0.4s disconnection times only apply to earth faults. I've not found anything else in the regs that suggests they apply to short circuits. 435.5.2 says faults should be disconnected before the fault current...
  20. P

    Domestic Ceiling lights short circuited when a bulb blew

    Just the ceiling lights (3 rooms + bathroom), all wall sockets working fine & no circuit breakers popped out. Any ideas why? Someone said it could be rodents chewing the cables & my upstairs neighbour has had a few infestations recently:mad:. I'm in a Victorian terrace ground floor flat. Does it...
  21. A

    Short circuit - making me short circuit!

    Hi all, I do hope you can help me with my 2014 Fiat Fiorino. I have a short circuit which has stopped the rear tail light and front side light from working. when the lights are on, ignition is on but the engine isn't running the lights work, the lights work whilst the heater plug light is...
  22. happyhippydad

    Why was the RCD not tripping with a N-E short?

    I went to a property to carry out an EICR. Sockets and cooker were RCD protected all the other circuits were not. I realise there is an order of doing the tests but I thought I would check the RCD test button. It didn't trip. I then did an RCD test and the RCD didn't trip. Took the cover off...
  23. M

    Domestic Installing LED strips but not working possible short circuit

    Hi all. Seems like a simple fix just need some advice. I was fixing LED strips in the kitchen today. The switch in the kitchen is a 2-gang which powers the LED strips and the ceiling lights. There are 3 seperate LED strips to go around the kitchen, each connected to an LED driver and power...
  24. Starjack

    5 week short courses

    So is it possible to be a fast-food worker or an office worker and then go on a 5 week course and come out the other end proclaiming to be an electrician. In addition to that should you be allowed to do a 5 week course and immediately go self employed. Is it safe to do a 5 week course then...
  25. A

    How to change spotlight bulb with short cable

    Hi I have been trying to change an led gu10 bulb in a recessed spotlight in my hallway. On others there has been enough cable to hold the bulb and twist it to change, but this is too short, so I cant hold the connector still to twist the bulb. I have tried pulled it with pliers, and also...
  26. S

    Well, that was a short trip

    Just back from Nairobi errr business trip cut short, looking at my "holiday" vids I need to loose a bit of weight........ anyways got to sort out my holiday cleaning...... sand gets everywhere,
  27. Empire

    Crabtree f-60 tp&n circuit breaker bs# and short circuit capacity

    Morning All, Having spent many years gleaning information from you all as a non member I've finally needed to join because, try as I might, I just can't find the answer to this puzzle, so here goes. I've just installed, replaced really, a TP sub board that's being fed from a Crabtree 60A STD...
  28. Spoon

    Doing a "Search" on the foum and what I put down in the search.... Tell me now my title is too short

    Very silly question. I want to search for a whole phrase.... e.g. Welcome to the forum When typing that into the search it searches for each individual word. I have tried putting the search in speech marks "Welcome to the forum". but with still the same result. What am I doing wrong...
  29. D

    tracking power feed short to switch

    120v household line. Feed line suddenly lost power. Tenant reports no heavy usage at the time - says she just finished a shower so possible condensation/steam issue caused the short. one gfci in bathroom works fine, no load on gfci just a direct 12-3 yellow feed line into gfci no load out...
  30. buzzlightyear

    short on members come a join us

    had a call from stroma .we rang you last year ,can you remember .mmm. no . you where going to change to us .mmm no . would you like to join us ,considering the your scam has but the price up mmm,. I under stand the price difference between a good steak and a donkey ear . the answer is no I will...
  31. UKMeterman

    A short video on why following proceedures matter

    Have a watch,
  32. Z

    Dose This Power Supply Consume 500w for a short RGB LED Strip ?

    hello everyone ^^ so I bought 1m RGB LED Strip with a power supply to use for my fish tank as you can see & the information on the power supply is : Input voltage 110v / 220v 50 60Hz Work temperature -55 -+ 110 C Max Power : 250w / 500w 1p raiting 1P68 so my question is dose it really...
  33. N

    Short Circuit When Emergency Lights Are Connected

    I've come across a fault at work. Fuse keeps blowing when they put it in. I haven't tested for a while, and so am pretty sure I'm missing some basic steps with the fault finding process. Small room. 1 emergency fluorescent light fitting, 1 bulkhead emergency fitting. Fluorescent is plugged into...
  34. P

    45 A Cooker Switch with short cables

    Hi, I need to replace a cooker switch. See attached image. The negative is on the right side of the pic. I'd need a 45A switch with socket. I can't really find any switch witch looks like this. Does anyone know where can I buy something like this? "I hope not crimping is the only solution" Thanks
  35. J

    New to the Forum, short intro

    Hi, Jovan here from London 7 years exp 26, self-employed, Completed apprenticeship, 17th ed, 2395, 2396 (midway through). Commercial & domestic.
  36. L

    Short circuit calculation

    Anyone able to help on the following... Short circuit calculation & current carrying capacity of: 50x10mm2 copper busbar & 80x6mm2 copper busbar One for the brain boxes..
  37. I

    Short circuits calculator (IEC 60909) for Android

    Friends, I need help with my app testing. Can I put my app link (Google Play) here? Free, no ads. This application (fault currents and voltages calculator) can be used for the following calculations: - three-phase fault current (IEC 60909); - two-phase without earth connection fault current...
  38. A

    Short circuit after water damage- advice please ?

    Hi all. Advice please. Had a flood 36 ish hours ago where several tens of gallons of water came through kitchen ceiling passing over the kitchen lighting circuit. The lights (6) are ceiling inset 240 downlights, no transformers. The lights are connected in the circuit with connection blocks and...
  39. Alex-SL

    Is the IEC 60909 standard applicable for short circuit current calculations in UK?

    Hi. I would like to get a help from this forum electrical engineers. There is the international standard “IEC 60909” for calculations of symmetrical and asymmetrical short circuit currents. I need to calculate line-to-earth short circuit (circuit 0.4kV) by the software that uses calculation...
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