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    when working on a specific circuit, remove the fuse or mcb to that circuit so that if the mains get's switched on by mistake then that circuit will still be isolated. You Can Not Remove Some Types Of MCB, So Disconnect The Circuit Wiring From The MCB...All Removed Fuses & MCBs Should Be Kept In...
  2. P

    Wiring outside light to two way switch

    3 wires cos one is neutral 1 is live and one is switched live for pir over ride.... Blue Is Commonly Used As a Neutral In a 3C+E Cable,
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