short

  1. G

    Dead short between 3 conductors

    What reasons can anyone think of why a circuit would have a dead short across all 3 conductors ? so far I'm thinking - water damage - possible rodent / pest damage any more ?
  2. G

    In defence of the short course trainee part 2 Marvo

    Only kidding, as it been a week already :rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl:
    • GMES
    • Thread
    • course part roman short times trainee
    • Replies: 5
    • Forum: UK Electrical Forum
  3. D

    Short distance PIR, Danlers??

    Evening all, 1st fixing a job at the moment and the client is having 6x LED Aurrora sola IP65 down lights installed in the soffit at the front of the house, the road is less than 3m from the front door and soffit obviously, they want them to be triggered by a sensor, so i suggested fitting a...
    • D.A.B_SOULTIONS
    • Thread
    • distance front house pir sensor short soffit switch
    • Replies: 4
    • Forum: UK Electrical Forum
  4. J

    BS 1361 main fuse short circuit capacity/overload at ka ratings explained.

    Hi. I am an apprentice electrician, and was wondering if anyone could help me as I'm getting confused with something that's probably quite simple. If I am correct to work out the amps running though an appliance you do w/voltage. So 10kw/240v = approx 42amps. Of I'm correct in this? My boss...
  5. P

    Short Courses and QS System amongst concerns of DCLG Commons Select Committee

    As some may (or may not) be aware, on 6th Jan 2014 five electricians and the Scheme operators gave evidence before the DCLG Commons Select Committee : Player The Committee clearly have serious concerns regarding : 1. Electrical scheme members using "short courses" as a means of entry to...
  6. S

    Fluorescent fault overcurrent trip?

    4ft old style starter/ballast type fitting which when powered does nothing at all (not a flicker) but trips the 6A/30mA RCBO after maybe 3-5 secs. I didnt have my clamp meter with me when i went to see the fault but assume due to the time delay that its the overcurrent part of the RCBO rather...
    • SpannerSpark
    • Thread
    • ballast delay fault fitting fluorescent overcurrent short starter trip
    • Replies: 9
    • Forum: UK Electrical Forum
  7. R

    Mind the short circuit!

    Anybody ever taken note of the risk in trying to change the direction of run of a motor running in star-delta mode?
    • Realstylz
    • Thread
    • circuit motor short short circuit
    • Replies: 18
    • Forum: UK Electrical Forum
  8. Pete999

    Short tails

    Hi I've heard lots of talk on forums regarding what one person described as the three meter rule, with regard to the size of cable required, (for example a 500a busbar sysem, and a requirement for a smaller supply taken from these busbars) should the cable from the busbars to the new switch...
  9. B

    Where to get short lengths of Polyduct?

    A customer is getting a new supply and we need 5m of 32mm polyduct. Trouble is I can't find anyone local willing to sell me short lengths. Jewsons are the recommended supplier by SSEPD etc but sell 25m rolls only. Does anyone know of a supplier in the north east hampshire, surrey, berkshire...
  10. D

    Dead Short?

    What test will I find a dead short in? Continuity?
  11. H

    New Zealand "live" short circuit

    Hi all, I'm a translator, translating a Portuguese text into English that includes a list of electrical faults. One of those is described as a fault that occurs when you connect two positive poles in a circuit. What is that called in English? The literal translation of the Portuguese term is...
    • harshduck
    • Thread
    • circuit electrical live phase short short circuit
    • Replies: 3
    • Forum: UK Electrical Forum
  12. B

    IR testing

    When IR testing on lighting circuits i keep coming across dead shorts between L+E and N+E on the same circuit. I then proceed to investigate and the faults clear (maybe a screwed neutral or something ). however im scratching my head as to why im getting dead shorts between L+E when the mcb...
  13. J

    Short circuit capacity & max zs

    Hi all. I tested a building last week where they had used bs 3871 and also bs 4293 rcbos/mcb's. I can't seem to find the ka of these and also the max zs permitted.
  14. D

    Advice or job hope

    Hi all, I'm a 21 year who just returned for Australia, I served a 3 year apprenticeship and also have one year of been fully qualified, I have my 17 th edition regs and also passed my 2391 inspection and test. I'm from the gloucester area, please could you give me advice on further course or job...
  15. L

    Insulation resistance Live to Earth on lighting circuit dead short

    Hi all, Tested a lighting circuit recently and got live to earth dead short and neutral to earth dead short on insulation resistance all loads were still connected there was a fluorescent fitting on the circuit and signs of green goo in switches and ceiling roses and the MCB was not tripping. Do...
    • Lilyrose08
    • Thread
    • circuit dead earth fault insulation insulation resistance lighting lighting circuit live resistance short until
    • Replies: 15
    • Forum: Talk Electrician Forum
  16. J

    MCB short circuit capacity

    6 amp BS EN 60898 .....6ka being the maximum fault current the device can handle, although the device may no longer work after that. The 3 underneath this being the fault current (ka) the device can handle without damaging it and then being able to be reset. I have been told 2 different...
    • jamesBoater
    • Thread
    • being capacity circuit current device fault mcb rating short short circuit
    • Replies: 7
    • Forum: UK Electrical Forum
  17. S

    IR testing problem

    Hi, I was doing some tests prior to installing a fan on a lighting circuit. IR readings L-E were dead short & N-E were a dead short, yet the lighting circuit works o.k. I have had this problem with energy saving lamps, when removed the circuit was o.k but this was giving 0.04Mohms at 500v not...
  18. i=p/u

    Short circuit current

    3.6v, 4 ah , em batt pack shorted in my pocket and burnt a hole in jumper, what current was flowing or was it the discharge , smokey, thx wise one
    • i=p/u
    • Thread
    • batteries battery circuit current resistance short short circuit
    • Replies: 9
    • Forum: UK Electrical Forum
  19. N

    Insulation Resistance - Live to Neutral short

    Hi all, Just a quickie. I carried out an insulation resistance test on a lighting circuit which only has two rooms consisting of 4 lights. Live to earth and neutral to earth was fine but when I tested live to neutral I got a short circuit. All the bulbs were removed so just wondering if...
  20. M

    Prospective fault current ?

    Can somebody please clear up for me what is prospective fault current? Am i right in thinking its the value of overcurrent you get through fault conditions like short circuits and live conductors and exposed conductive parts ? Thanks
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