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Do-It-Yourself (DIY) Question & Answer Forum
4Mm Radial Off Ring Cct
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<blockquote data-quote="Chr!s" data-source="post: 297557" data-attributes="member: 21241"><p>Okay<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>1, BS7671 only provides several regs regarding Ring Circuits, it doesn't provide the design.</p><p></p><p>2, The onsite Guide contains a design for a ring circuit, certain parameters need to-be met.</p><p></p><p>3, In what the op is describing, it differs from the IET design, so you need to be competent to design such an arrangement.</p><p></p><p>4, Appendix 15 is informative, and states various other chapters of BS7671 that need to be met.</p><p></p><p>5, Is it possible, well there's no direct reg with respect to a spur, so providing you meet 433.1.103 which allows a reduced csa and the spur does not effect that and meets all other requirements of BS7671, then why is it not?</p><p></p><p>6, Is the op competancy, I'd say not, it's not rocket science, it's not that easy either.</p><p></p><p>7, Can you put a CU on Ring, well you won't be using 433.1.103.</p></blockquote><p></p>
[QUOTE="Chr!s, post: 297557, member: 21241"] Okay:) 1, BS7671 only provides several regs regarding Ring Circuits, it doesn't provide the design. 2, The onsite Guide contains a design for a ring circuit, certain parameters need to-be met. 3, In what the op is describing, it differs from the IET design, so you need to be competent to design such an arrangement. 4, Appendix 15 is informative, and states various other chapters of BS7671 that need to be met. 5, Is it possible, well there's no direct reg with respect to a spur, so providing you meet 433.1.103 which allows a reduced csa and the spur does not effect that and meets all other requirements of BS7671, then why is it not? 6, Is the op competancy, I'd say not, it's not rocket science, it's not that easy either. 7, Can you put a CU on Ring, well you won't be using 433.1.103. [/QUOTE]
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4Mm Radial Off Ring Cct
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