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Student & Learning Zone - City & Guilds
Insulation Test Results
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<blockquote data-quote="zimmy" data-source="post: 366043" data-attributes="member: 21593"><p>All current using equipment removed (lamps, chokes tec.)</p><p></p><p>All circuit breakers open</p><p></p><p>All switches closed - not forgetting any 2-way or intermediate switching</p><p></p><p>All test gear working</p><p></p><p>Fault on circuit (not clear where the fault is though at this point are we)</p><p></p><p>As above - regarding about everything including the GN3 page 31 <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Connect N/L together test to earth. This would rule out faults to earth. </p><p></p><p>If then 'fault' between L/N on IR reset instrument to' Low resistance Ohm meter settings' and test. Not the resistance and work out the 'Load' in amps. This may indicate that there is something left in circuit. Please note: No such thing as a 'dead short'</p><p></p><p>This sounds like a question from section B ?. Not a lot to go on here.</p><p></p><p>I'd ask your lecture to explain this to be honest.</p><p></p><p>One clue would be the number of points for the answer - 1 point each would indicate a VERY short answer for each point ; -)</p></blockquote><p></p>
[QUOTE="zimmy, post: 366043, member: 21593"] All current using equipment removed (lamps, chokes tec.) All circuit breakers open All switches closed - not forgetting any 2-way or intermediate switching All test gear working Fault on circuit (not clear where the fault is though at this point are we) As above - regarding about everything including the GN3 page 31 :-) Connect N/L together test to earth. This would rule out faults to earth. If then 'fault' between L/N on IR reset instrument to' Low resistance Ohm meter settings' and test. Not the resistance and work out the 'Load' in amps. This may indicate that there is something left in circuit. Please note: No such thing as a 'dead short' This sounds like a question from section B ?. Not a lot to go on here. I'd ask your lecture to explain this to be honest. One clue would be the number of points for the answer - 1 point each would indicate a VERY short answer for each point ; -) [/QUOTE]
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