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dual rcd board problems
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 18399" data-attributes="member: 250"><p>No chance!!!</p><p></p><p>The biggest problem with a shared neutral is nothing to do with RCDs RCBOs tripping...</p><p></p><p>Its when some poor spark (or diy Bob!) is working on the upstairs light circuit isolated at CU..</p><p></p><p>&amp; someone switches on light supplied from downstairs circuit...</p><p></p><p>and gets a shock from wires now energised that should be dead!!!!</p><p></p><p>(hopefully not a fatal shock! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> )</p><p></p><p>The fact that the OLD cu could not identify NON compliance with</p><p></p><p>reg 314.4 17th {This is then bit about ALL circuits being separate from other circuits!!!}</p><p></p><p>this was reg 314-01-04 16th in Brown Book AND Yellow book 1992!!!</p><p></p><p>The fact that we sparks have NOT been adhering to guidance that goes back 16years+...</p><p></p><p>then that is NOUGHT to do with 17th edition me thinks!!!!</p><p></p><p>just historical bad practice!!</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 18399, member: 250"] No chance!!! The biggest problem with a shared neutral is nothing to do with RCDs RCBOs tripping... Its when some poor spark (or diy Bob!) is working on the upstairs light circuit isolated at CU.. & someone switches on light supplied from downstairs circuit... and gets a shock from wires now energised that should be dead!!!! (hopefully not a fatal shock! :( ) The fact that the OLD cu could not identify NON compliance with reg 314.4 17th {This is then bit about ALL circuits being separate from other circuits!!!} this was reg 314-01-04 16th in Brown Book AND Yellow book 1992!!! The fact that we sparks have NOT been adhering to guidance that goes back 16years+... then that is NOUGHT to do with 17th edition me thinks!!!! just historical bad practice!! [/QUOTE]
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