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  1. EricMark

    UK EV Charger Earth Rod

    I recall a friend who was a radio ham fitting an earth pit in his garden, this was for the transmitter, 4 earth rods one each corner of garden and earth tape buried 1 foot deep connecting them, never measured the earth as could not get far enough away to put in test probes, but it was clearly...
  2. EricMark

    UK EV Charger Earth Rod

    I am now retired so not really worried about electric vehicles, but in essence be it a boat, caravan, or car you have the same basic problem, if you connect the earth of a PME supply to the body under fault conditions that body can be connected to a phase, so unless in a building which is also...
  3. EricMark

    ESi RF Programmable Room Thermostat. ESRTP4RF

    I have also looked at the three methods and wondered why, I would say ebus first option, but can only use ebus when there is one single thermostat, and the thermostat you have is not modulating type so no option to use ebus, so where using zone valves no option but to use 230 volt in many cases...
  4. EricMark

    Reducing voltage

    I was thinking of simply dropping the voltage not stabilising it, I was assuming always on the high side? It is unusually for a motor to over heat with such a small over voltage, I know many places used 220 volt, but before we dropped voltage in UK I used many Dutch items without a problem. I...
  5. EricMark

    Reducing voltage

    I would use a transformer with tapping as an auto transformer.
  6. EricMark

    UK AM2 cancelled due to Coronavirus

    Prime misters have gone to Snowdon to make speeches before, they it seems need to do it again. If you have every been there one does wonder what daft twits followed him all the way to Gladstone rock, it is a good 5 miles from nearest road, it seemed wrong to refer to them as the multitude, but...
  7. EricMark

    UK AM2 cancelled due to Coronavirus

    I cancelled my holiday to South of England due to Coronavirus, so now it seems Snowdonia National Park where I live had the busiest weekend in history, with so many visitors the idea of social distancing is impossible. So it seems no point closing down pubs, schools etc, if people are going to...
  8. EricMark

    Domestic inspection and testing what is required? England-Wales

    Sorry new rules England and Wales, Scotland has had them for a few years. In Scotland the person doing the testing has to have resent training so one would assume the collages in Scotland are telling testers exactly what needs testing, so not worried about Scotland, but new rules for rented...
  9. EricMark

    Domestic inspection and testing what is required? England-Wales

    I see your point, it is let the courts decide, but as you say, BS7671 states very early on in the document it is not law, but can be used in a court of law. So if I also had a home in Germany I could wire the house to German regulations, well at least I could have done until we left the EU, and...
  10. EricMark

    Domestic inspection and testing what is required? England-Wales

    When I bought my house we had it inspected before buying to highlight faults, so the inspection and testing done by RICS Chartered Surveyor and the report made. This clearly covered more than the electrics, but it did refer to the electrical installation so included a type of electrical...
  11. EricMark

    25 year old boiler wiring

    Glad to see it is running @Andy5678 as to @Timbo yes I also did fit motorised valves and thermostats to gas boilers in the 80's and 90's, however was warned not to do it with oil, I am an electrician not a heating and ventilating engineer, and I really don't know in real terms if there is any...
  12. EricMark

    Help! Am2 coming up and need help with the s plan

    25th Feb 2019 original post, would expect he has sat his exam by now? I will admit I have looked at central heating wiring for non modulating boilers and simple enough, but as soon as a modulating boiler is involved then it starts to get complex. Turning off a modulating boiler because your...
  13. EricMark

    Wrong type of RCD is it even part of EICR?

    I have noted more and more items ask for a type A RCD rather than type AC, with electric car charging units it is often even better than type A required, but with car charging units it is hard wired so clearly should be part of the inspection and looking up one make of charger unit not really a...
  14. EricMark

    Nest learning thermostat

    Seem to remember coming across that some years ago and found pumps and valves were 24 volt. Think it was a now discontinued Honeywell system.
  15. EricMark

    How can I test these old car clocks?

    From memory they were clockwork, and the electric wound them up, they were only powered from the ignition circuit. Also some were battery powered, the wiring was for panel lights only, back in 1950's it was regular to remove battery so clock designed to retain time. As to pos or neg earth in the...
  16. EricMark

    Why do I have a wall thermostat? is there nothing better?

    Flame failure relay is what trips. Been like that ever since I moved in, did get it services and jets changed and photo sensor but still fails to light around once a week.
  17. EricMark

    Why do I have a wall thermostat? is there nothing better?

    First house hot air heating, it worked, expensive to run, but 1970's no double glazing. Next house, bedrooms got too hot, and living room too cold, added extra radiator to living room (open plan) and standard TRV's up stairs, wanted room where cistern was so had main 7 water heater this was...
  18. EricMark

    Why do I have a wall thermostat? is there nothing better?

    My point with post, is it seems the modern central heating is in the main a hotchpotch of independent ideas, huddled together with no real control until you move to the super expensive wifi enabled TRV heads, and then we have a whole selection of devices that will not talk to each other...
  19. EricMark

    Why do I have a wall thermostat? is there nothing better?

    I have the wall thermostat in the hall, not really the best room, but the wires were already there, so it was the obvious selection as only needed to connect up, did not need to run new wires, the bathroom has no TRV and is thermo-syphon with the domestic hot water heating, and the toilet has a...
  20. EricMark

    Why do I have a wall thermostat? is there nothing better?

    In a way I know the answer, wall thermostat turns heating off when we have warm weather, but I look at the PC and it shows me the target and current in each room from the electronic TRV heads, and I thing if it can tell me when room is cold why can't it be connected to boiler and switch it on...
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