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Do-It-Yourself (DIY) Question & Answer Forum
Three phase supply with strange wiring into single phase
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<blockquote data-quote="ProDave" data-source="post: 526680" data-attributes="member: 6969"><p>I would say that's a 3 core concentric. Red, yellow and blue cores and the black it the wrapped outer core.</p><p></p><p>to me it looks the be a TNS supply with the outer core as earth, blue as neutral, and red and yellow in parralel as Live. Quite why they fitted a 3 phase head the that is the mystery bit.</p><p></p><p>The cable probably could be reconfigured at the DNO's discression and assuming 3 phase was available at the other end of this cable, as a 3 phase TNC-S with the outer as the normal TNC-S combined neutral and earth.</p><p></p><p>If the OP really wants a 3 phase supply to the house, get a quote from your DNO to upgrade to 3 phase, it might be quite cheap if they are happy to repurpose that cable and 3 phase is available close by, or it might be astronomically expensive.</p></blockquote><p></p>
[QUOTE="ProDave, post: 526680, member: 6969"] I would say that's a 3 core concentric. Red, yellow and blue cores and the black it the wrapped outer core. to me it looks the be a TNS supply with the outer core as earth, blue as neutral, and red and yellow in parralel as Live. Quite why they fitted a 3 phase head the that is the mystery bit. The cable probably could be reconfigured at the DNO's discression and assuming 3 phase was available at the other end of this cable, as a 3 phase TNC-S with the outer as the normal TNC-S combined neutral and earth. If the OP really wants a 3 phase supply to the house, get a quote from your DNO to upgrade to 3 phase, it might be quite cheap if they are happy to repurpose that cable and 3 phase is available close by, or it might be astronomically expensive. [/QUOTE]
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Three phase supply with strange wiring into single phase
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