source

  1. R

    UK Main Earth Cable Source

    When earthing gas and water service pipes do the 10mm earthing cables HAVE to come from the main earthing terminal (first tee) or can they come from a consumer unit that is connected to the main earthing terminal by a 16mm earth cable ? What specifiacally do the relevant regulations say about...
  2. B

    Source for desklamp transformer

    hi, this is my first post. I doing a simple repair of my wife’s favorite 50w halogen (50w, 30w), desklamp. I think the transformer died. it is a 120v to 12v and spits out 50w or 30w current by way of a toggle switch. no current out of the dc end, might as well replace it. Easier said. what...
  3. G

    How to maintain 12volts even the source drops to 9volts

    Dear All, Need your expertise advice. Problem: I have fixed a new music player in car which needs 12volts but the existing or old music player runs in 9volts. When the car is running or ideal the voltage is comings as 12volts But Whenever the car engine is restarted, the voltage drops to 9volts...
  4. R

    Open source thermostat for electric underfloor heating?

    I'm getting started on rehabbing my house and I want to install an electric underfloor heating system that I can eventually control through an open source home automation system. As I understand it, most thermostats are not compatible with electric underfloor heating because for electric...
  5. Vortigern

    Ashley & Rock Supasafe MCB replacement or source anyone know of?

    Just wondered if anyone knows where Ashley & Rock Supasafe MCB 45A might be found, new though instead of ebay.
  6. D

    What is the source of the pulsating/vibration noise in my flat?

    Hello, I live in a house converted into two flats - I'm in the upstairs flat. For several months now I have been hearing a pulsating/vibration sound throughout my entire flat. It often starts after midnight and continues to late morning or early afternoon and sometimes it is loud enough to stop...
  7. B

    I am trying to source a coil which has got very little details on it

    I would like some help in identifying and sourcing a coil. I have never seen one like this and there is very limited markings on it. 17-5509 Y7 is marked on one side and all I can make out from the label is Coil 240v 50hz.
  8. Dartlec

    How to protect existing 16mm T&E feed to CU when converting to sub main at source

    Currently quoting for a job that needs to be done next week and working out how best to proceed, so thoughts welcome. Current situation: -->PME incomer that has just been moved by UKPN within a porch (brick built permanent type) from one wall to another. -->60A main fuse -->Meter -->Large MK...
  9. D

    Wanted I need a MK SENTRY 6330 RCBO 6AMP . Any one got one? Source URL: https://www.electriciansforums.net/forums/for-sale-and-wanted-forum.38/

    I need a MK SENTRY 6330 RCBO 6AMP . Any one got one? Source URL: For Sale and Wanted Forum - https://www.electriciansforums.net/forums/for-sale-and-wanted-forum.38/
  10. T

    Electrical symbols

    Hi there! I wonder what this electrical symbol means... Thank you in advance!
  11. Z

    Replacement of old honeywell thermostat with mc6 wifi thermostat

    Hi Guys, Hopefully you can help? I just wanted to get some advice on the wiring of the new MC6 WIFI thermostat? I have attached a picture of what I am replacing and the wiring diagram of the new Thermostat. Please also see recorded voltage readings I have taken. Current Honeywell Stat :=...
  12. L

    There is a one circuit (one voltage source), two phases and

    Hello Electricians, This is my first post and I'm glad to be one of this forum member. However, to clarify my question. I've a "Skin Effect Heating System", fed by 1240 V. The circuit is quit simple, Phase U, Neutral in the middle and Phase V. Phase U and Neutral feeding the heating cable#1...
  13. A

    Emergency Stop Switch KJD17B NVR Source URL: https://www.electriciansforums.net/forums/electrical-tools-and-products.14/

    I want to make a power tool extension lead using an Emergency Stop Switch KJD17B NVR. However, this is a momentary switch (not latched) so the supply is not constant. Do I need the switch to operate relays that will feed a constant 240V? What would the wiring diagram be? what relays would I...
  14. J

    How does one HALF CUT solar module affect the other modules in the string when it is partially shaded?

    Hello everyone, I have a fairly technical question. I wonder what will happen to the efficiency of the PV system when we shade the bottom of one solar module (HCC) connected in series? Will the performance of the entire string decrease by half because only the top works in this module? Isn't it...
  15. C

    Earthing neutral in a multi source system

    This has me clueless. Why must the neutral be unearthed at the transformer and generator and only allowed earthing at the switch-gear? I can't see any reason because the neutral will normally not be carrying any current and thus no parallel current paths would form.
  16. J

    Source of backbox with 'skirt'

    Does anyone know of a source of a dual socket back box with an extended 'skirt' (see photo) The broken one is on a concrete wall with the feed through a hole in the wall at the top of the skirting so other options are limited. Thanks Jim
  17. B

    Source on radio changes by itself

    Hi there, I am having an issue with my 2014 Honda Vezel where the source on the radio would change by itself, that is, it would jump from FM to AM on its own. Could someone advice me on what I should look for and how I can diagnose the issue.
  18. S

    electrical consumption of an air source heat pump, Ontario Canada

    Hi - No idea if I am writing in the right place. Please, I cannot get a straight answer when the temperature is 0- -20 Celsius - where can I find a chart of what normal KWhr consumption is? I think mine is using far too much electricity thanks
    • shira l
    • Thread
    • air source canada consumption electrical heat heat pump not uk pump source
    • Replies: 5
    • Forum: UK Electrical Forum
  19. T

    3 phase swa sub

    Just a quick one does a three phase 25mm sub main in swa 4 meters long have to be fused even thou it comes from a bs1361 100amp services fuse then from a standard three phase isolation switch fitted from electricity company? Being swa and 25mm in size would this be acceptable?
  20. N

    There was mirror with led lights,with no switch for the light from the power source .can rocker switch be use (240v Ac power soutet

    There was mirror with led lights,with no switch for the light from the power source .can rocker switch be use (240v Ac power source)
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