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The Old Meterman Chestnut Turned Up Again Today .
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<blockquote data-quote="Sidewinder" data-source="post: 401111" data-attributes="member: 9512"><p>Very often the column root is coated in "bitumen" for corrosion resistance.I was suprised when testing a few how well insulated they are.</p><p></p><p>A former subbie of mine, who I mentored has since moved into the Local Authority Public Lighting team, and now onto their I&amp;T team for public buildings.</p><p></p><p>He re-iteratd this recently when describing a fault he had seen.</p><p></p><p>He tried to do an IR test from the column to "earth", the old screwdriver in the ground job, and got a very high reading.</p><p></p><p>So be careful what you hope for!</p><p></p><p>As you say GRP gets around this.</p><p></p><p>Our local DNO in this region is quit happy to provide and maintain a reliable earth connection.</p></blockquote><p></p>
[QUOTE="Sidewinder, post: 401111, member: 9512"] Very often the column root is coated in "bitumen" for corrosion resistance.I was suprised when testing a few how well insulated they are. A former subbie of mine, who I mentored has since moved into the Local Authority Public Lighting team, and now onto their I&T team for public buildings. He re-iteratd this recently when describing a fault he had seen. He tried to do an IR test from the column to "earth", the old screwdriver in the ground job, and got a very high reading. So be careful what you hope for! As you say GRP gets around this. Our local DNO in this region is quit happy to provide and maintain a reliable earth connection. [/QUOTE]
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The Old Meterman Chestnut Turned Up Again Today .
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