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  1. O

    double pole switch ???

    hi i have been advised to put a double pole switch on my bathroom fan can someone please explain what a double pole switch is and what its function is many thanks
  2. O

    earth loop impedance

    hi can anyone tell me,if i get a high reading on an earth loop impedance test on a socket outlet does this simply mean that the there is poor earth continuity ? and what is a likely cause. [/b]
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