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Earth Loop Testing (1/3)
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<blockquote data-quote="kme" data-source="post: 14230" data-attributes="member: 113"><p>Just to expand on CJS - r.e. earth loop (Zs/Ze/Ra).</p><p></p><p>The measurement taken (Ze) is the resistance of the (phase) supply tail, through the meter &amp; cutout, down the supply cable to the transformer (substation), through the (earthed) neutral point and back to house via PEN conductor (TN-C-S) or cable sheath (TN-S). Zs same but includes furthest point of final circuit wiring (for EACH circuit) within the property.</p><p></p><p>Ra - similar, but return path is through the "general mass of earth", and your rod, tape, structural metalwork etc. et al, et al.</p><p></p><p>Clearer??</p><p></p><p>p.s. CJS - like your new word m8 - furtherest. Can we also have "most furtherest, or does that imply that there may be a " least furtherest"?</p><p></p><p>Admin: can we have a subsection, relating to sparkys` unique words, the definitions and origins? I know what dog c0xs are, but not why they`re called that. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p></blockquote><p></p>
[QUOTE="kme, post: 14230, member: 113"] Just to expand on CJS - r.e. earth loop (Zs/Ze/Ra). The measurement taken (Ze) is the resistance of the (phase) supply tail, through the meter & cutout, down the supply cable to the transformer (substation), through the (earthed) neutral point and back to house via PEN conductor (TN-C-S) or cable sheath (TN-S). Zs same but includes furthest point of final circuit wiring (for EACH circuit) within the property. Ra - similar, but return path is through the "general mass of earth", and your rod, tape, structural metalwork etc. et al, et al. Clearer?? p.s. CJS - like your new word m8 - furtherest. Can we also have "most furtherest, or does that imply that there may be a " least furtherest"? Admin: can we have a subsection, relating to sparkys` unique words, the definitions and origins? I know what dog c0xs are, but not why they`re called that. :o [/QUOTE]
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