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TT Earthing issue
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<blockquote data-quote="Joey d" data-source="post: 494728" data-attributes="member: 32565"><p>Hi All,</p><p></p><p>This might seem basic but I could use some advice.</p><p></p><p>In a domestic property the earthing arrangement is TT. A new shower circuit needs installing, but have done some testing the Ze is 74 ohms, Zs@db 4.8ohms, Ipf@db 49a</p><p> </p><p></p><p>Now obviously on any new circuits to be installed, they will have a Zs value higher than the permitted value in BS7671. </p><p> </p><p></p><p>My question is should I contact Western Power to have TT changed over to PME? </p><p> What needs to be done in order for a new circuit to be installed and then signed off as satisfactory in a EIC?</p><p></p><p> </p><p></p><p>Many thanks for your help guys</p><p></p><p> </p><p></p><p>Joey</p></blockquote><p></p>
[QUOTE="Joey d, post: 494728, member: 32565"] Hi All, This might seem basic but I could use some advice. In a domestic property the earthing arrangement is TT. A new shower circuit needs installing, but have done some testing the Ze is 74 ohms, Zs@db 4.8ohms, Ipf@db 49a Now obviously on any new circuits to be installed, they will have a Zs value higher than the permitted value in BS7671. My question is should I contact Western Power to have TT changed over to PME? What needs to be done in order for a new circuit to be installed and then signed off as satisfactory in a EIC? Many thanks for your help guys Joey [/QUOTE]
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