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  1. M

    MICC/PYRO. CABLE FAULT. / FUSE NOT BLOWING

    Hi. I have a question about MICC/PYRO cable. I have only very rarely worked with this type of cable , I've mostly worked in domestic wiring. However the other day a friend asked me to change a faulty single socket for him, ( piece of cake). It didn't turn out to be !!! He lived in a flat built...
  2. P

    Can someone help?

    so currently doing my level 3 diploma and have this question I'm stuck on can anyone help? a radial circuit is protected by 20A type B circuit breaker and is wired using 2.5mm2 70C thermoplastic single core live conductors with 1.5mm CPC to a length of 28mm in steel trunking. ambient temp is...
  3. Joshua

    New member short introduction

    Hi guys, I'll keep this short and sweet. I've been browsing the forums the last few years. Signed up last year but keep forgetting to sign in while I browse :S I don't mean to be antisocial I promise. I'm 25, I've been in the industry 5 years, just finished my NVQ3 and almost ready to get my...
  4. D

    Electrician Jobs school small job

    Hi, a company who I do work for in the north have approached me as the sparky they use for south London has let them down, in short they need an old 32A 3 phase commando removed and a new (supplies) 32A single phase one installed. As discussed we would require an electrician to attend at...
  5. F

    Working on live DC

    Hey guys, My boss wants me terminating new supplies in a -48v d.c Distribution board. Easy enough but the board cannot be turned off due to critical load. Now my question is this. Is it safe and or legal to work on live -48v d.c. and what would the consequences and dangers of possible short or...
  6. D

    ECS Health and Safety Assessment short notice in Hampshire

    Just wondering if anyone knows of any companies that offer the ECS health and safety certificate at short notice in Hampshire as my ECS card has expired but I need at least the health and safety certificate to get on a job I have been offered. I suppose I could go into London to use the premium...
  7. J

    Looking for advice

    Hi Forum, At the ripe old age of 42 I have decided that I would like to re-train as an electrician. Yawn, another one they say. Based on the understanding that I've got at least another 25 years work in me, it doesn't feel too late to make a change. Obviously, considering my age, I am looking...
  8. B

    DC battery back up units

    All, I have had a battery back up unit installed for warehouse lighting for the emergency lighting. It has stopped working and the investigation was found to be a short circuit that affected the unit. However after being informed by the designer that both the positive and negative connections...
  9. P

    SCC rating ...

    Hi All In the process of entering data for a recent EICR and could do with a little help to fill in a blank field ... Short Circuit Current Rating for ... a Wylex 100A 100mA DP RCD BS4293 not time delayed. I did look when on site, but couldn't spot it on the device, front or sides and don't...
  10. M

    How to deal with Pyro Cable?

    Situation is there's some 53 year old pyro cable that I need to either remove, or make dead, or cut short and push back into the wall having ensured that the still-live end cannot short out the circuit or come into contact with anything. No hope of fully removing it, as it goes up the cavity...
  11. Sintra

    A Short Guide To Working Out Cable Sizing

    Sintra submitted a new resource: Cable Sizing - Cable Sizing Read more about this resource...
  12. D

    Generator tripping

    I'm not a sparks.. but I'm hoping for a bit of advice for an animal rescue charity in kent.. Their generator fine on 110v but as soon as it's switched to 230v it trips even with no load... any ideas please?
  13. S

    Ford Streeka short to earth pcm

    i have a customer with a streetka non starter turns over fault codes are pcm p0686-60 pcm p0562-60 pcm p0628-60 pcm p0231-60 pcm p1794-70 these are all short to ground from pcm is there a common fault with this model or one wire that could be causing this any help wouls be gratefully...
  14. W

    Short circuit

    Sorry just learning but with a short circuit. V=i x r so dosnt that mean that the maximum short circuit in a circuit with even no resistance would be 230 Amps. How comes I hear of higher currents in faults and breaking capacity for the breakers are 6ka.
  15. Dan

    Short survey for manufacturers on BIM Objects

    ECA, Voltimum and EDA hold joint survey Read the full news article
  16. S

    Ceramic bottle fuse holder, sudden short to DIN rail (earth)

    Hello... Anyone had any extended experience with ceramic bottle fuse holders. Shortly after turning on isolator switch there was phase to ground short between one of fuse terminal metallic parts and DIN rail (35A gL/gG fuses have been taken out to test the correct working order of contactors)...
  17. R

    Kitchen island sockets

    Hello. I have a new kitchen going in with a island in the middle. A 10mm t&e (protected by a 40A mcb) has been laid under kitchen floor for the hob that's going on it. No other cables can be run to it now. Trouble is I would now like two double sockets on it. Can this be done? I thought...
  18. L

    A short intro and hello

    Hi, I'm newly qualified 17th Edition Part P, looking to do some Domestic Work. I've done my share of DIY and have some industrial experience from being ex forces but haven't tackled much since. I'm sure I'll have some silly questions :dizzy2: from time to time but looking forward to getting to...
  19. S

    Max Zs on rcbo type c 32a 1667 or 0.54??

    Has anyone any views on max Zs for say a type c 32a rcbo at 80% is 0.54 and 100% 0.68. I am currently testing a collage and all ring circuits are type c and I am exceeding 0.54 and 0.68 this is a TNCS system so to my knowledge table 41.5 in regs which tells us 1667 for 32a rcbo for TT systems...
  20. P

    Tightening Positive Battery Terminal, Hit Chassis and Shorted Out?

    Hey everyone. Bit of a silly noob question. On my dirt bike, as I was tightening the positive battery terminal lead(it was loose), the allen key slipped and hit against the subframe causing a short and sparks everywhere, and causing the allen key to be extremely hot to touch. It was only for a...

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