times

  1. R

    UK Powered speaker tripped circuits four times over a couple weeks, insulation tester result seems ok, need advice.

    Hello, stating I am not an electrician, I have purchased a fairly expensive set of used powered studio monitors and I’m concerned about one of them. I was switching the power switch at the back and I’ve switched it off quite poorly where it went back on itself and as it was half way between on...
    • reprobate
    • Thread
    • advice circuits couple insulation powered result seems speaker tester times tripped weeks
    • Replies: 6
    • Forum: UK Electrical Forum
  2. M

    Trip MCB at times RCD too intervals days or hours; test if faulty appliance

    Hi I am asking for help as a novice and 1st time user of this forum. Recently started to experience tripping of MCB & sometimes with the RCD at random times, intervals can be days after resets or several hours. Could an appliance or appliances be overloading the circuit? How can I test an...
  3. Antares

    Testing RCBO x5 times

    Hello everyone, Is it necessary to test RCBO x5? Some say that you can’t even test at x5 times because it can damage RCBO. Others that you can, but we don’t put the result in testing sheets. I found a recommendation that it is advisable to test x5. Cheers
  4. B

    Correct OCPD for disconnection times.

    Simple question (or so I thought) What would be the Correct OCPD to achieve correct disconnect times for a 200amp sun-main with ze of 0.26 tncs. What are everybody’s thoughts??
  5. RobsRepairs

    Thanks for the welcome .. encountered improper house wiring several times when repairing stairlifts

    This is a great forum! Am a stairlift, electric scooter, electric wheelchair, repair guy. Also fix broken parts. Also use electricity to multiply tree growth and fruit production. Also use currects for my health e.g. heal myself as Dr. Tennant teaches. Also use electrolysis to make my own...
  6. biaelectric

    Disconnection times on EPS circuits

    When there is a fault on an EPS circuit, how are we meeting the disconnecting times? Earth fault is easy - just use a 30mA B-type RCD, but for the overload, are MCB good enough? On a 3.6kW supply, the voltage will drop so quickly, will there be enough energy to trip conventional MCBs or do we...
  7. M

    RCD Tripping times question

    A few 30mA RCBO's that i have tested recently are tripping lower at x1 than they are at x5, e.g 13.1 x1 13.8 x5, I know both these results comply but im curious does any one know why the 1 times trip is lower than 5?
  8. Y

    RCD disconnection times help!!

    Im suppling distribution circuits and want to use the largest possible RCD available to avoid nuisiance tripping (its for outdoor street furniture and its a TT system). The Ze is 160. The reg below says 1 second disconnection time but cant find anymore info in the regs about it. Closest I can...
  9. J

    How many times can you resit an AM2s section??

    Hello all, Straight to the question, I have passed everything on my am2s part from the oline exam I am now on my 3rd attempt!!!! I was told today by my employer that college had told him if I fail 3rd time I have to resit the whole thing again! is this ture ? I cant find anything online...
  10. D

    Random occurrence , random times

    I have an odd problem. I have 2 wall sconces in a hallway controlled by wall switches at each end of that Hall. On random nights between 3-4AM, the lights will come on, stay on for a few seconds, then off. I also have motion sensor cameras 8n that Hall that detect nothing. Any explanation or...
  11. C

    Horstmann Economy 7 Quartz heater always 'on' - doesn't turn off according to pre-set times on clock

    Hi all, I have quite an old Horstmann Economy 7 Quartz water heating system in my flat (installed around 2007). It's been working fine until the last month, now the water heater always seems to be 'on'. The clock is set to the correct time, and even when it is the middle of the day when the...
  12. cliffed

    Rcd tripping times on EIC

    Testing Rcd trip times would you write down 28.4ms or 28ms If say 28.6 would you write down 29ms.
  13. Loki

    EV chargers turned off at peak times

    Hi, Has anyone heard about this? https://www.dailymail.co.uk/news/article-9982253/amp/Charging-points-electric-cars-preset-turn-NINE-HOURS-day.html
  14. T

    Can electrical engineers do repairs during Covid times

    Hi I am new to this forum and would kindly request advice from any of your members. I have a Solar Inverter which is inside its 10 year warranty but has now it appears sadly stopped working. The company Uenergy originally asked for photos of their instalation, which I provided, claimed an...
  15. cliffed

    How many times

    Just finished a class job
  16. K

    Horstmann economy 7 quartz charging off peak times

    Hello there, I hope you could help me. I have this horstmann economy quartz 7 and it was working fine until last month. It seems I get charged for heating the water during night which should be the off peak time for low rate. My smart meter from my energy supplier is showing too much usage...
  17. J

    Bathroom Mirror with fluorescent tubes turning off at random times

    Hi, I have a bathroom mirror fitted in 2013 with 2 fluorescent tubes and a pir sensor to operate. Its been working without any issues until a couple of days ago. Now when I turn the light on by passing a hand under the sensor the light will then go off after anything from a minute to 10...
    • jazzlover
    • Thread
    • bathroom fluorescent mirror off pir random times tubes turning
    • Replies: 5
    • Forum: Lighting Forum
  18. buzzlightyear

    times up

    meet a fellow spark today at the wholesalers ,me said i believe NICEIC has taken over ELECSA for the previous post . the fellow spark told me i have an assessment this Wednesday with are nice inspector .me ok and he's coming to test place that I'm working at and what about 2mter rule...
  19. E

    Becoming an electrician during covid times..

    Hello everyone, I am new to this forum. I have seen the posts about becoming an electrician, however, given we are living in uncertain times, I would really like some advice on becoming an electrician during the covid years. I have a degree in electronic engineering and I have been working...
  20. 0

    RCD disconnection times!

    Hi all, just a quick one regarding RCD disconnection times. So for non rcd protected circuits disconnection times of 0.4 / 5 seconds and 0.2 / 1 second for TN + TT final and distribution circuits. RCDs (fire / fault protection) usually 300ms at rcd for rated current. (differs when s type)...
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