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  1. R

    4 x core (2 x pair) but not telephone colours

    I am cabling my MVHR unit to its control panel which requires 4 core (2 pair) cable. The manual refers to 4×0.22 mm cable. The colours referenced in the instructions are White, Green, Yellow, Red and I would like, if possible to keep the colours matching the instructions for simplicity of...
  2. R

    Why do some overflow pipes have a 45 degree cut

    Hi I have installed a header tank in the loft for a rain water harvesting system and as per design it has a 40mm overflow pipe to the outside. I see that overflow pipes sometimes have a 45 degree angle cut on the outlet end. What is the purpose of that cut and do I need to make one or can...
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