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  1. E

    Home power intermittently tripping

    An RCD, 13A Gfci Leakage Protection Plug may not have the selectivity to discriminate if both devices are the same mA rating. The RCCB may still trip.
  2. E

    voltage tester show sequence of lights.

    I'm no expert as I do not own this model but probably similar to my Fluke. For the AC light, I guess you must be picking up voltage this will illuminate for AC or DC volts, Maybe just to warn you that there is very low voltage present below 12 volts. Did you try reversing the probes ? The L...
  3. E

    twin and earth cabling size for commercial buildings

    Depends on the purpose of the cavity & what else will end up in there, other than a cable route. Especially an external cavity wall.
  4. E

    twin and earth cabling size for commercial buildings

    Probably Building Regs may apply if the cable is run in the cavity. Then get some polystyrene pumped in to help migration.
  5. E

    Advice on cable for EV Charge Point Cable

    Quoted from Doncaster cables. '' Voltage Band II is defined as all voltages which are used in electrical installations not included in Band I. This means that all 230V supplies are included in Band II. Proximity of electrical services (extract from 528.1) - Except where one of the following...
  6. E

    Portable device safety test question

    Is your prototype designed for internal or external use as IP ratings will apply to the choice of materials?
  7. E

    Amd2 SPD on smoke alarms

    I think it was mentioned somewhere on another thread that Aico alarms have surge protection built in.
  8. E

    Amd2 SPD on smoke alarms

    BEAMA Guide to Surge Protection Devices (SPDs) – Selection, Application and Theory - https://www.beama.org.uk/resourceLibrary/beama-surge-protection-guide-.html for download. Although not out of BS7671 we still need to install it according to the manufacturer's specifications. I think we should...
  9. E

    Type 2 SPD (equipment 10meters or more from spd)

    Perhaps you may have already seen this article page 8 https://kingsmillindustries.com/wp-content/uploads/2020/07/Kingsmill-18th-Edition-Wiring-Regulations-1r-120320.pdf
  10. E

    Could I use this cable maybe ?

    https://ideadigitalasset.com/DAMRoot/Original/11854/10977_ZCERIPQ2GUVOHDWF.pdf
  11. E

    UFH Thermostat model help

    You may find something similar to go by here REHAU Documents - REHAU - https://www.rehau.com/uk-en/epaper
  12. E

    Neutral current in a single phase installation confusion

  13. E

    power fed light switch Hager rcbo won’t trip

    Are you testing it as an AC setting on MFT, as an A-type test, some testers do not have a variable test current to test correctly? What tester are you using? Is any DC earth leakage present which may influence the result?
  14. E

    3 phase motor cable size

    4mm2 cable method C , min depending on the length of the circuit. Don't forget volt drop & startup current for choice of mcb. Please do your own check calculation to clarify the above.
  15. motor calcsPNG.PNG

    motor calcsPNG.PNG

    • Electro-tech
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  16. E

    Burnt Washing machine plug and wall socket

    4-1/4 inch square, my version was a Robin in the snow. Yeh, green tiles with an Avacado Bathroom Suite, very posh in its day.
  17. E

    Domestic generator with PV?

    Maybe Transfer Switch with time delay
  18. E

    Direct Buried Cables 3 Phase

  19. Cables underground.PNG

    Cables underground.PNG

    • Electro-tech
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  20. E

    Direct Buried Cables 3 Phase

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