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Electrical Inspection & Testing Forum
rcd not tripping
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 16154" data-attributes="member: 250"><p>Take a hypothetical situation</p><p></p><p>Light circuit NO cpc.. but connected via RCD (say TT inst)</p><p></p><p>some idjut sticks their finger in a live lamp holder while changing the bulb &amp; resting across the metal central heating radiator..</p><p></p><p>30mm could flow through body.. trip RCD...</p><p></p><p>but then the fault path is moved, (persons takes their hand out of lamp holder),</p><p></p><p>so NO CPC circuit did trip RCD, when reset RCD all resets no problem..</p><p></p><p>IF RCD still tripping when try to reset, more likely a permanent fault somewhere..</p><p></p><p>less likely to be non-CPC circuit.. but still possible???</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 16154, member: 250"] Take a hypothetical situation Light circuit NO cpc.. but connected via RCD (say TT inst) some idjut sticks their finger in a live lamp holder while changing the bulb & resting across the metal central heating radiator.. 30mm could flow through body.. trip RCD... but then the fault path is moved, (persons takes their hand out of lamp holder), so NO CPC circuit did trip RCD, when reset RCD all resets no problem.. IF RCD still tripping when try to reset, more likely a permanent fault somewhere.. less likely to be non-CPC circuit.. but still possible??? [/QUOTE]
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