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  1. bernardgreen

    Split-load Switch / RCD flipping down repeatedly

    The RCD is tripping due to current flowing to Earth from either the Live and/or Neutral. Turning OFF the MCB on the faulty circuit will not stop the fault tripping the RCD. Many people including some "qualified" electricians believe that if an RCD trips when an MCB is switched OFF then the...
  2. bernardgreen

    Constant current LED driver pairing with LEDs

    Running LED elements on a current lower than their rated current will prolong the life of the elements. Very often the LED elements can be run on a lower current while still producing enough light I would advise using 550 mA current as a test to see if the LED elements are bright enough with a...
  3. bernardgreen

    Cutting up (and getting rid of) a cold water storage tank in the loft.

    How did the tank get into the loft ?
  4. bernardgreen

    Bungalow 'ringing' after fibre installed in street

    These lights are no problem when the supply is ELV 50Hz from a wound transformer. The problem arises when a switch mode ELV supply is used, The RF radiation is high enough to affect radio comms a mile away. A sea side picture gallery "up graded" to dimmable ELV supply, marine radio comms...
  5. bernardgreen

    Is it worth adding additional cores when buying SWA?

    Twisted rope tends to untwist when under tension. This causes the cables to twist together. Either use braided rope or fit a swivel link between rope and cables
  6. bernardgreen

    How to fix expansion joint onto 20mm PVC conduit

    expansion loops are a way to deal with expansion
  7. bernardgreen

    Installing RCBO Query

    Very sensible. The impossible ( 1 in 10,000,000 ) can sometimes happen and the effects can be more serious as no one is prepared for it happening
  8. bernardgreen

    What is the point of the smart meter monitor?

    The technology of the "Smart Meter" allow for individual properties to be cut off without any need to access the cut out.
  9. bernardgreen

    Rat or mouse??

    Peanut butter is a good bait.
  10. bernardgreen

    Rat or mouse??

    My unwanted visitors are dealt with using one of these. https://www.screwfix.com/p/pest-stop-plastic-metal-battery-powered-mouse-killer/45407 A rat sized version is ( was ) available
  11. bernardgreen

    CAT underground cable/pipe locating devices

    Not true. Old metal service pipes tended to be straight lengths where possible. Plastic pipes are flexible and can be curved
  12. bernardgreen

    Triton Shower Wattage?

    The resistance will vary with the temperature of the wire. Resistance increases as the temperature rises, whether this change of resistance is large enough to be significant will depend on several things,
  13. bernardgreen

    how to attach ground wire - turkish wall lamp

    One of many sources https://www.edwardes.co.uk/categories/brass-earth-tags
  14. bernardgreen

    Removal of large beam below ceiling

    Good advice, use a structural engineer to check it. I have a similar beam in my cottage and it is definitely load bearing.
  15. bernardgreen

    Clearance for service fuses?

    The distribution company will need to work live when moving the fuse, This means they will need clear access to the fuse. And you need to maintain that clear access for when the fuse has to be changed A few years ago a brick wall, part of an extension, was obstructing access to the company fuse...
  16. bernardgreen

    Navalny dead.

    There had been incidents where security and/or police had to deal with armed insurgents and other threats to the Ukrainian population.
  17. bernardgreen

    "Do not use an extension lead!"

    The word altitude appears 76 times in the MK catalogue. Without checking I believe they all reference to 2000 metres. So no altitude related problems in the UK with MK products. Other manufacturers may set their maximum install altitude at less than 2000 metres. I have seen industrial...
  18. bernardgreen

    'Unhelpful posts' ??

    The Eupalinian aqueduct is a 1,036 m long tunnel running through Mount Kastro in Samos, Greece, and built in the 6th century BC to serve as an aqueduct. The tunnel is the 2nd known tunnel in history which was excavated from both ends, and the 1st with a geometry-based approach in doing so
  19. bernardgreen

    'Unhelpful posts' ??

    Underground cisterns in the desert https://nabataea.net/explore/history/water-collection/
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