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2 way switching configuration HELP
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<blockquote data-quote="Geoff1946" data-source="post: 474174" data-attributes="member: 28452"><p>I don't think anyone is trying to be unhelpful Dave, but it's not possible to deduce how it's wired from the information available. </p><p></p><p>If it was me, I would get a piece of paper and sketch out what is there, then by testing and examination work out what the interconnections are.</p><p></p><p>Thoughts. - 1 There are other ways of two way switching than three strappers; i.e. two strappers, feed to one "c" and load to the other. </p><p></p><p>2 You don't have enough "spare" cores, (your designation) for a two way switch downstairs. Here is a big clue.</p><p></p><p>3 Where are the live feeds? Is upstairs and down separate or on the same MCB?</p><p></p><p>4 Look at the cable groups into the boxes. ie which reds and blacks are a cable,? -might help deduce their destination.</p><p></p><p>At the end of the day get a long fly lead and do it by continuity testing to light points, and switches. Just hope there are no hidden junction boxes!</p></blockquote><p></p>
[QUOTE="Geoff1946, post: 474174, member: 28452"] I don't think anyone is trying to be unhelpful Dave, but it's not possible to deduce how it's wired from the information available. If it was me, I would get a piece of paper and sketch out what is there, then by testing and examination work out what the interconnections are. Thoughts. - 1 There are other ways of two way switching than three strappers; i.e. two strappers, feed to one "c" and load to the other. 2 You don't have enough "spare" cores, (your designation) for a two way switch downstairs. Here is a big clue. 3 Where are the live feeds? Is upstairs and down separate or on the same MCB? 4 Look at the cable groups into the boxes. ie which reds and blacks are a cable,? -might help deduce their destination. At the end of the day get a long fly lead and do it by continuity testing to light points, and switches. Just hope there are no hidden junction boxes! [/QUOTE]
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