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wiring

Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure.
Wiring is subject to safety standards for design and installation. Allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric current capability, with further restrictions on the environmental conditions, such as ambient temperature range, moisture levels, and exposure to sunlight and chemicals.
Associated circuit protection, control and distribution devices within a building's wiring system are subject to voltage, current and functional specification. Wiring safety codes vary by locality, country or region. The International Electrotechnical Commission (IEC) is attempting to harmonise wiring standards amongst member countries, but significant variations in design and installation requirements still exist.

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  1. E

    Heating/mid point valve problems

    Dear All, My first post and request for help. My daughter has recently bought her first house and we have been refurbishing for her. Having replaced all rads and valves we are ready for the CH/HW to go on, however we have a problem as follows:- When the programmer is on CH & HW she gets CH and...
  2. T

    Heating control wiring courses

    I am AT LAST going gas safe next year :-) got training center sorted, lads to do my 200hours with and definitely got the customers i i want to get away from bathroom installs and be more of a heating engineer. I have s basic understanding of hearing wiring but that's it as I specialise in...
  3. D

    system wiring

    Evening chaps got to add a unvented to a ecotec 831 tomorrow so basically running it as a system boiler and just leave the utility sink off the boiler , will freely admit to not being all up on wiring what's the crack with wiring it in all valves etc are gonna be next to the boiler cheers
  4. B

    Changing the entire mid position actuator

    Hi what is the best way to do this ? Turn off the mains and drain down the system ? Then undo all the 3 nuts and disconnect the wiring ? Then connect new one up and wiring ? Is the wiring bit hard ? I know the actuator part can be removed on its own ... Then fill back up , test for leaks and...
  5. T

    Shower pump wiring

    Hi all, I have piped in a shower pump in airing cupboard but have no power source I can get to, also the flooring is a nightware to get up so can't run any cable that way unless no other way. Question is can I run it off the lighting circuit ?, it already has a shaver socket in the bathroom on...
  6. J

    BDR91 wiring in bathroom

    Hi all, Just wondering how people wire these. The installation manual http://www.honeywelluk.com/Documents/Installation-Guide/pdf/bdr91-instal-50034510-uk07r1009.pdf seems to have the wiring as Spur- BDR91-Boiler with power to the boiler getting passed through the BDR91 rather than...
  7. jaydebruyne

    Heating Issue

    Went to a job today. Tenant complaining that the rads were getting hot when the room stat was off. Y plan system fully pumped, old potterton heating only boiler. On investigating I found that the programmer had been wired so it gave a permanent live to the room stat regardless if the heating...
  8. M

    windhager am i getting old ?

    Has any body had any experience with a winhager pellet boiler ? I am a retired plumber so pretty well knowledged but this is one thats making me think i am renovating my barn. I have contacted windhager but they not very helpfull Scenario Boiler windhager exclusive model bwe260 bought...
  9. T

    Thermostat problem

    Hi, I have a Bosch Worcester 25si compact boiler, Centaurplus C17 series 2 programmer and British Gas RS2 thermostat on my system works fine. Bought a Heatmiser Smart Stat to replace the old RS2 stat, the wiring is 3 wire Red, Black and Earth, but there is currently no 240 coming from the live...
  10. B

    Wiring help

    Evening, looking for some wiring advice. Got a vokera mynute 15vhe heat only boiler. When I put the programmer (Horstmann 425 diadem) on for hw only the pump runs bringing the ch on. So basically I can't have hot water only. Anyone have any tips? There is no zone valves.
  11. G

    Worcester 15/19 stat wiring photo required

    Hi guys, my oil combi boiler was replaced. The guy who replaced the boiler may have got something wrong as the ch can be controlled indepently without the controller on the front of the unit. if somebody could show me a photo of the wiring connections as presently my stat is like a big on /...
  12. G

    Wiring diagrams

    Could anyone advise me were I can obtain wiring diagrams for a open vented system. the system in question would consist of the following. two open vented boilers and a low loss header in tandem both with internal pumps and one external pump Two water cylinders run of the two boilers both with...
  13. P

    Wiring on satchwell thermostat tlx 2259

    Hi I want to replace an old satchwell thermostat tlx 2259 with something similar and just need to know what wire is what on my one i have just removed - heres a photo
  14. A

    wiring cm927 to ecotec pro 28

    Evening Guys wireless thermostat has been fitted, when setting the temp the the wireless receiver powers on but the boiler does not fire up RT24 - 24 V DC room thermostat link has been removed The wiring has been fitted as follows 4 core cable Mains connector block x1 Live to stat live x1...
  15. J

    Programmer and stat change

    Afternoon all, i've recently bought a Drayton mitime RF T710R to replace my hortsmann C27 and poorly position surface wired room stat! Thought I might be able to take the programmer off and stick the new one straight on the back plate but I should have known better! this is the current...
  16. G

    worcester bosh greenstar ri wiring

    hey guys, just been to quote for a job to replace the wiring center/programmer along with fitting a new greenstar ri. just researching the wiring as i only really fit combis ive noticed i need to wire the pump direct to the boiler for the pump overun - got that bit in the boiler we have a...
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