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Electrical Inspection & Testing Forum
Insulation Testing 2/3
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<blockquote data-quote="Apache" data-source="post: 14327" data-attributes="member: 828"><p>Now we have the earth loop testing sorted out I'm going to ask about the insulation test. I know there is another thread on this but my questions are far more basic! :| </p><p></p><p>I don't understand what insulation the test is measuring. Is it the insulation of the cabling in the system? Is it the insulation between the live and neutral conductors in the cable.</p><p></p><p>It seems to begin with a continuity test and then passing increasing voltages upto 1000V through live and neutral? What is it we are measuring? It seems everything has to be unplugged on the circuit in question.</p><p></p><p>What would anomalous readings suggest? Damaged cable?</p><p></p><p>Thanks in advance for your help</p><p></p><p> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="Apache, post: 14327, member: 828"] Now we have the earth loop testing sorted out I'm going to ask about the insulation test. I know there is another thread on this but my questions are far more basic! :| I don't understand what insulation the test is measuring. Is it the insulation of the cabling in the system? Is it the insulation between the live and neutral conductors in the cable. It seems to begin with a continuity test and then passing increasing voltages upto 1000V through live and neutral? What is it we are measuring? It seems everything has to be unplugged on the circuit in question. What would anomalous readings suggest? Damaged cable? Thanks in advance for your help :D [/QUOTE]
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