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  1. Strima

    conductive soil

    What a bout a trench with LP tape?
  2. Strima

    Torque Screwdriver Calibration Company?

    I'd rather not thank you... ???
  3. Strima

    Torque Screwdriver Calibration Company?

    I appreciate that calibration costs money, overheads etc. Just feels like everyone wants money at the minute, I seem to be constantly paying out with little to show for it. It looks like I'll be getting a new driver, leaving my old one for a few months then calibrating that one so I have a...
  4. Strima

    Torque Screwdriver Calibration Company?

    The cost is ridiculous compared to the original purchase cost of the tool. I can get pre-set adaptors for my set but I need 2.26Nm and the nearest they do is 2.0Nm so not a million miles off, and they retail at around £35 which is less than a lot of calibration companies charge. But I begrudge...
  5. s-l400.jpg

    s-l400.jpg

    • Strima
    • Media item
    • Comments: 0
    • Category: Electrical Tools and Products
  6. WhatsApp Image 2021-05-24 at 16.39.32.jpeg

    WhatsApp Image 2021-05-24 at 16.39.32.jpeg

    • Strima
    • Media item
    • Comments: 0
    • Category: Electrical Tools and Products
  7. Strima

    Torque Screwdriver Calibration Company?

    Anyone recommend a decent company for torque screwdriver calibration that won't break the bank? Some companies seem to be pretty close to the price of a new one which would start to get expensive over the years.
  8. Strima

    Having a house re-wire, are old back boxes within new regs?

    If the box is plastic and the switch is plastic then the earth should be terminated into a block/Wago for future use if required. As the whole lot is plastic and non-conductive the screws can be metal with no risk.
  9. Strima

    SPD in commercial offices

    Had one customer, of a previous employer, who would call us out at least once a year to replace a faulty rectifier module on one of their sites just north of Carlisle. After the third incident I decided to do a little research and the site alarm would trigger a rectifier fail everytime there was...
  10. Strima

    SPD in commercial offices

    An SPD will not fully stop a surge, it steps it down to a more manageable level. I've lifted this from the Hager SPD guide: • Type 1 - SPD which can discharge partial lightning current with a typical waveform 10/350 μs. Usually employs spark gap technology. • Type 2 - SPD which can prevent...
  11. Strima

    Having a house re-wire, are old back boxes within new regs?

    1. Are the original light switch back boxes still under current regulations, it seems they haven’t replaced any of the old light switch back boxes? As long as they're not made of wood and are still fit for purpose then there's no regulatory problem. I would personally recommend deeper...
  12. Strima

    SPD in commercial offices

    Nice idea, I'm surprised they wouldn't just stump up for a couple of finials, they tend to be a lot cheaper than the damaged caused by a strike.
  13. Strima

    SPD in commercial offices

    In a commercial set up the installation should be set up in zones, each one designed to step down the surge current to a tolerable level at the equipment. Same can be applied in domestic by using type 3 surge protected outlets.
  14. MDMImage.png

    MDMImage.png

    • Strima
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  15. Strima

    Lazy Spa TNCS

    What do the manufacturers say?
  16. Strima

    What is the best cable to run down a garden cavity wall to feed led brick lights on each side other than swa

    NYY-J.
  17. Strima

    List of torque settings

    TBH you're better off checking up to date manufacturers information as things do change. A generic crib sheet off the net will never be updated and you would need to check for accuracy. Had an instance a few years ago where the manufacturer originally stated 2Nm for their MCBs, NADER IIRC, but...
  18. Strima

    Tri Rated 35mm Earth - Johns adventures of tin tin - or not...

    The ferrule only stops the strands from poking out everywhere, once you clamp down on them they deform to suit the termination. We often have this problem on larger CSA cables and cheap MCBs where they are a struggle to get in, we deform the ferrule to fit, clamp the termination, torque it up...
  19. Strima

    TN-S High Ze measured 3 wire no trip.

    Have you done a two lead test between L&N?
  20. Strima

    Garage supply

    It's only a couple of wires, what could go wrong...
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