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Joined: Apr 2007
Posts: 539
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Joined: Apr 2007
Posts: 539 |
Originally posted by djweis:
What is the 3rd wire used for on the British system? My apologies for missing this question over a month ago!  The cables listed as "triples" on those pages were typically used for internal exchange wiring. The third wire of the circuit was for control -- The sleeve connection on a cordboard jackfield or the P-wire on Strowger switches (used to mark busy trunks and control the holding of the connection).
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