evohome ATF600 wall mount cable

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  • Edinburgh2000
    Automated Home Guru
    • Dec 2016
    • 134

    #16
    Originally posted by gordonb3 View Post
    Not where I live. Thermostats are normally connected using a cable that has two 0.5mm cores or in some cases when installed at some later time (e.g. when replacing gas heaters with central heating) using 4 core norm88 telephone wire.
    It's an age thing, nothing to do with geography. In the 'old days' all the wiring for central heating systems was at mains voltage. Like DorrisMancer, my thermostats were all wired with three core + earth mains cable (6243Y 1.5mm2 cores; red, yellow, blue; later brown, grey, black). That cable is rated to 19 Amps (in conduit) - that's 4kW at mains voltage - far more than would ever be needed for a boiler and pump.
    Last edited by Edinburgh2000; 18 September 2019, 09:42 AM.

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    • DBMandrake
      Automated Home Legend
      • Sep 2014
      • 2361

      #17
      Originally posted by Edinburgh2000 View Post
      It's an age thing, nothing to do with geography. In the 'old days' all the wiring for central heating systems was at mains voltage. Like DorrisMancer, my thermostats were all wired with three core + earth mains cable (6243Y 1.5mm2 cores; red, yellow, blue; later brown, grey, black). That cable is rated to 19 Amps (in conduit) - that's 4kW at mains voltage - far more than would ever be needed for a boiler and pump.
      Similar here. The wiring to my original (mechanical!) thermostat that was replaced by the ATF600 is full 1.5mm flat 3 core 240v mains cable - the same stuff that ring circuits are wired with. Mine is old enough to be colour coded red and black...

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      • DBMandrake
        Automated Home Legend
        • Sep 2014
        • 2361

        #18
        Originally posted by filbert View Post
        Depends how hard the bricks are. Some of mine are very hard to drill into. Also, the 'plaster' is more like a cement rendering. No fun.
        The bricks in my internal walls are unbelievably hard. If you accidentally drill into the mortar between the bricks they're easy but other than that even a brand new masonary drill bit really struggles, and I've gone through a few of those in the time I've lived here... I still have a set of shelves to go up in my study that have been sitting undone for nearly a year because I can't face the hassle of drilling so many holes into those blasted bricks... I think I'll have to buy a hammer drill first!

        No way am I going to try to drill out a full depth back box when I don't have to.
        Last edited by DBMandrake; 18 September 2019, 09:15 PM.

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        • DorrisMancer
          Automated Home Guru
          • Nov 2017
          • 129

          #19
          If you are using masonry drills then it sounds as if you haven't yet experienced the benefits of an SDS drill - they are orders of magnitude more effective than the old style hammer drills that we all used 20+ years ago.
          ... and now back to heating ;-)

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          • prozak1982
            Automated Home Lurker
            • Aug 2019
            • 6

            #20
            After butchering (don’t ask) the power supply, supplied with the ATF800, I bought a replacement 5V 1A power supply off of eBay and cut the end off before connecting the now exposed red wire to + and the black wire to - on the ATF600 which has worked a treat - the power supply is plugged into a mains socket on the wall behind that of the wall mount after I drilled a hole for the cable to feed through. ATF600 wall mount with ATF800 power supply and no 4v transformer in sight. NB. + on the ‘white’ power supply out the box of the ATF800 in my case was in fact the wire with the writing on not that with stripes which I overlooked hence the initial error.

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            • gordonb3
              Automated Home Ninja
              • Dec 2016
              • 273

              #21
              Originally posted by Edinburgh2000 View Post
              It's an age thing, nothing to do with geography. In the 'old days' all the wiring for central heating systems was at mains voltage. Like DorrisMancer, my thermostats were all wired with three core + earth mains cable (6243Y 1.5mm2 cores; red, yellow, blue; later brown, grey, black). That cable is rated to 19 Amps (in conduit) - that's 4kW at mains voltage - far more than would ever be needed for a boiler and pump.
              Okay. Never seen wiring like that myself, not even in the seventies home where my parents used to live, but I'll take your word for it. Either way be careful with electricity and when in doubt hire a professional to do it for you.

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