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Student & Learning Zone - City & Guilds
TN-S TO TN-C-S
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<blockquote data-quote="Traineeboy" data-source="post: 515480" data-attributes="member: 32807"><p>yes it’s one of those. When the earth is tested via the sheath he got 0.27 and from the earth bar in the service head he got 0.15 so it’s clearly a separate earth from the sheath. My thoughts are that yes a earthing conductor should be connected in the service head ( to make PME) but the old TN-S earth should also be left as the sheath needs to be bonded as it’s technically a extraneous conductive part. Would I be right in my thinking ? </p></blockquote><p></p>
[QUOTE="Traineeboy, post: 515480, member: 32807"] yes it’s one of those. When the earth is tested via the sheath he got 0.27 and from the earth bar in the service head he got 0.15 so it’s clearly a separate earth from the sheath. My thoughts are that yes a earthing conductor should be connected in the service head ( to make PME) but the old TN-S earth should also be left as the sheath needs to be bonded as it’s technically a extraneous conductive part. Would I be right in my thinking ? [/QUOTE]
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