Definition of ring main noun from the Oxford Advanced Learner's Dictionary


    ring main

    BrE BrE//ˈrɪŋ meɪn//
    ; NAmE NAmE//ˈrɪŋ meɪn//
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  1. 1an arrangement of cables that allows electricity to be supplied to a series of places from either of two directions
  2. 2= ring circuit
  3. 3an arrangement of connected pipes that allows water, steam, etc. to enter and leave a system

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