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Electrical Inspection & Testing Forum
Earth electrode test
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 70000" data-attributes="member: 250"><p>As said, you need to ensure NO parallel earth paths are present so the main earth connection to earth electrode needs to be disconnected.</p><p></p><p>If the main earth is disconneted... the installation is unsafe for any non-skilled persons to use.</p><p></p><p>Therefore the installation should be isolated... or SWITCHED OFF!..</p><p></p><p>best place is the main isolator switch.....</p><p></p><p>so to do your test readings you would need to be on the incoming side of the switch... because the outgoing side would be dead.</p><p></p><p>obviously you could switch off all of the individual MCB's / RCBO's, and use the other side of the main switch....</p><p></p><p>but it is just quicker and easier turning the main switch off.</p><p></p><p> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 70000, member: 250"] As said, you need to ensure NO parallel earth paths are present so the main earth connection to earth electrode needs to be disconnected. If the main earth is disconneted... the installation is unsafe for any non-skilled persons to use. Therefore the installation should be isolated... or SWITCHED OFF!.. best place is the main isolator switch..... so to do your test readings you would need to be on the incoming side of the switch... because the outgoing side would be dead. obviously you could switch off all of the individual MCB's / RCBO's, and use the other side of the main switch.... but it is just quicker and easier turning the main switch off. :) [/QUOTE]
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