finding

  1. Prime Design

    IR Tests & Fault Finding

    Hi fellow electricians, I'll get straight to the point. How low do the readings for an IR test need to be on 250V or 500V scale before a 30mA RCD or 32A MCB trips when the circuit is live and in operation and where would I find that information? I know it will trip straight away with a dead...
  2. E

    Fault finding flow diagrams

    Hi everyone. I'm hoping someone can help. i have a number of guys working for me, some are good at fault finding and some still need the experience. im looking for a fault finding flow diagrams to lead the less experienced ones down a logical path when looking for faults on not only heating...
    • EPRspark
    • Thread
    • diagram diagrams fault fault finding finding
    • Replies: 32
    • Forum: UK Electrical Forum
  3. E

    Fault finding flow diagram

    Hi everyone. I'm hoping someone can help. i have a number of guys working for me, some are good at fault finding and some still need the experience. im looking for a fault finding flow diagrams to lead the less experienced ones down a logical path when looking for faults on not only heating...
  4. sparkdog

    Pyro fault finding

    Got some domestic lighting Pyro with very low insulation reading LN to E 0.07 Megohms.I was thinking of blowing hot air into the termination boxes one at a time while watching the insulation reading.In theory if one varies it might indicate the area of the fault.I have access to the light and...
  5. P

    Single phase motor fault finding.

    Looking for some help with motor fault finding. I've got a small woodworking router that i broke a couple of years back, given that we've just been covering very basic motor theory at college i want to see if i can either fix it or at least understand what's wrong with it if its terminal! This...
  6. C

    Fault finding publications and links for Cat 5/6, alarm systems, telephone systems

    As the title suggests, can anyone recommend any publications or Internet links relating to elv systems. Most of my work is on large commercial systems and the company I subby to contract out for data/tv/alarm etc. I'd like to be able to learn as much as I can about these systems from recommended...
  7. J

    Fault finding outside lighting - high tuff cable

    Hi all We have just been to look at a fairly new outside lighting install which is experience nuisance tripping. The installation is actually to a v good standard, but its fairly large, so i though i'd try and do some research before we spend hours pulling it apart. All joints to light...
    • jjnr78
    • Thread
    • cable fault fault finding finding lighting lights outside
    • Replies: 15
    • Forum: UK Electrical Forum
  8. HappyHippyDad

    Fault finding - in particular tripping RCD's?

    My confidence levels and ability levels have increased hugely in the past year. In others words I have gone from knowing 0.1% of all there is to know about electrics to around 1.5%!! :) I would just like to gain more confidence and knowledge regarding ‘tripping RCD’s’! I have only changed one...
  9. L

    Fault finding questions

    1. I carried out a x1 rcd test on a 30ma rcd and the time came in at 44ms with doesn't comply with the circuit disconnecting by 0.4ms. What is the problem? Old/faulty rcd? X5 was 13ms. 2. Done my continuity test on a ring and all continuity was proved. However my neutrals end to end was 0.61...
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