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  1. Z

    Horstmann Electronic 7 seems to be constantly on!

    Hi, The way it works is it uses the thermostat that is installed with the heating elements in the boiler. I was trying to find out if there was another controller working the water in addition to this controller. given that you have set the times to minimum , then the water should be cold! If...
  2. Z

    Horstmann Electronic 7 seems to be constantly on!

    Reading up on the device . (Ignore some of my note) The water temperature is controlled by the built in thermostat (s) of the immersion heater. There can be up to two rods and the wiring is adjusted accordingly. The unit will continue to heat the water if the thermostat has failed (open circuit)...
  3. Z

    Horstmann Electronic 7 seems to be constantly on!

    There are things to try. You can reset the unit to the standard times. The details of how to do this or I can tell you. secondly , do you have another timer ? Can the other timer which probably works the room temperature also control the hot water? Do you have a thermostat on the cylinder ...
  4. Z

    Why does connecting neutral to casing work?

    The second wiring used in the u.k. for a floors worth of lights. the live and neutral and earth come to the lamp holder of the first lamp in the chain of lights. This in live is connected to a cable to the switch and to the next light holder.The return cable (quite often a different core colour...
  5. Z

    Why does connecting neutral to casing work?

    Let’s guess at the situation . You stated that you measured a voltage at 120v - so I guess that you are not in the U.K. I have very little knowledge of other countries but let’s have a go. quite often for a light in a shed the flow is from the main customer unit (or a spur) there are 3 wires...
  6. Z

    Why does connecting neutral to casing work?

    Does light have a wall switch ? Typically, there are two wiring scenarios in the U.K.
  7. Z

    Tier 4

    If you don’t believe , then do away with the blue book - how many people are we saving from electrocution versus the number who have died from Covid. let’s state ( I really mean it - that the IET ) serves no useful purpose today. There are more deaths from ovens than all other causes and there...
  8. Z

    Tier 4

    Wrong - this morning one of my friends died from it. You lost the bet . currently, 1 in 85 have the virus. it’s the same odds of rolling 3 dice and getting 2 sixes and the third dice showing a 2 or 4 or 6. Get this and your in hospital and or dead. Roll the dice every time you meet someone (...
  9. Z

    Sign off other people's work

    This does not seem to be in agreement with the “blue book”. It states that if the installer does not have the skills to test , he (the installer) can appoint someone else.
  10. Z

    Why does connecting neutral to casing work?

    Sounds like you have a broken neutral away from the equipment. Should never use earth as a “live “ .
  11. Z

    Sign off other people's work

    An electrician has stated that he will not sign off work done by someone else he stated "all or nothing". Just want to check how many electricians on this site would sign off electrical work done by other people. Yes I would sign off other people's work No, I would not sign off other people's work
  12. Z

    House entry problem

    Wd has an lithium grease spay but it might be too thick
  13. Z

    House entry problem

    If there is no external lock , then there is no problem with the salt. As salt dissolves in water, you could wash it away. you could cover the key in petroleum jelly or wd40 etc and this would form a barrier but you would need to do it fairly often perhaps using a specialist WD product ( e.g...
  14. Z

    House entry problem

    There are remote entry keypads and systems ( can include with burglar alarm and fire alarm. The benefit is all the system is internal to the house. just wave the key fob and in you go. Only other answer is to cover the lock with a cover that doesn’t allow dust in .
  15. Z

    No voltage on live-neutral but voltage on live-earth

    The first test is a continuity test followed by the earth impedance test. the continuity test would show that the earth is connected to the house earthing system but would not show if it was safe from cutting the electricity in the correct time. if you assume that there is no secondary fault...
  16. Z

    Are we allowed to use 5 amp fuses in 13 amp plugs?

    You could do that and then make a bolt for the door
  17. Z

    Testing lamp is rewired safely

    No I’m not but I am saying that if he carries out the tests above , there is a massive reduction in risk than not doing it. The use of any testing is not without risk. There is a small risk that having tested with the MFT tester recommended that the earth wire becomes loose and the live wire...
  18. Z

    Testing lamp is rewired safely

    Let’s go back to when electricians were poor and couldn’t have the MFT tester (not invented) and the trade wasn’t a restricted trade. when I was 5 this was the test that would be done. consider the size of the cable (not bell wire ) Buy a cheap multimeter - useful for checking fuses. I had...
  19. Z

    Testing lamp is rewired safely

    An idea that I haven’t used is that charity shops get items PAT tested( they can’t sell anything electrical ) . perhaps they might test it for you for a small fee.
  20. Z

    Why does my electric keeps tripping

    Another thing that may be easy to try. I had a socket RCD near a freezer and it tripped when I used a drill and it tripped the main RCD for the house. replaced socket with a non rcd one and used the drill plugged into an extension cable with an RCD plug into the same socket. all worked fine...

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