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Do-It-Yourself (DIY) Question & Answer Forum
Shed earthing
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<blockquote data-quote="spinlondon" data-source="post: 92813" data-attributes="member: 3394"><p>There is nothing in BS7671 preventing you from exporting the earth on a Protective Multiple Earth system.</p><p></p><p>However, the DNO may not allow it.</p><p></p><p>In the OPs case, the SWA of the cable should be used as the CPC, and one of the cores should be used as an equipotential bonding conductor.</p><p></p><p>Using the SWA as a CPC will protect the cable if anyone cuts through the cable with a spade or fork.</p><p></p><p>If the SWA has not been terminated correctly, then it will require equipotentialy bonding, as it is now an exposed-conductive-part. Which would require the use of at least a 10mm</p></blockquote><p></p>
[QUOTE="spinlondon, post: 92813, member: 3394"] There is nothing in BS7671 preventing you from exporting the earth on a Protective Multiple Earth system. However, the DNO may not allow it. In the OPs case, the SWA of the cable should be used as the CPC, and one of the cores should be used as an equipotential bonding conductor. Using the SWA as a CPC will protect the cable if anyone cuts through the cable with a spade or fork. If the SWA has not been terminated correctly, then it will require equipotentialy bonding, as it is now an exposed-conductive-part. Which would require the use of at least a 10mm [/QUOTE]
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