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Upgrading fuse board on system with conduit earthing
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<blockquote data-quote="andy_spark" data-source="post: 250906" data-attributes="member: 9378"><p>I've been working for the local housing association recently and the sub contractor I'm working for has had us rewiring all circuits in blocks of flats using conduit as the earth, the reason being (they claim) is that it doesn't comply to 17th edition.</p><p></p><p>After rewiring a radial socket circuit I tested Zs without the new earth, conduit only, 0.19 ohms and using new earth as well 0.18 ohms. It seemed like a lot of hard work for nothing!</p></blockquote><p></p>
[QUOTE="andy_spark, post: 250906, member: 9378"] I've been working for the local housing association recently and the sub contractor I'm working for has had us rewiring all circuits in blocks of flats using conduit as the earth, the reason being (they claim) is that it doesn't comply to 17th edition. After rewiring a radial socket circuit I tested Zs without the new earth, conduit only, 0.19 ohms and using new earth as well 0.18 ohms. It seemed like a lot of hard work for nothing! [/QUOTE]
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Upgrading fuse board on system with conduit earthing
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