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Failed RCDs
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<blockquote data-quote="green-hornet" data-source="post: 63135" data-attributes="member: 2683"><p>There was a thourough examination carried out by the electrical safety council on rcd,s about two years ago.</p><p></p><p>They tested a hell of a lot more than you would have in all the schools.</p><p></p><p>The results of the tests proved that about 80% of failed rcd's on site proved ok in the lab.</p><p></p><p>Out of all failed units ony 1% proved a positive failure, and was mainly caused by poor maintenance.</p><p></p><p>To say you have 53 failures would go against all recorded data on rcd tests carried out to date, and would in fact cause a major upset in the electrical industry, similar to an airline going down with no immediate reason.</p><p></p><p>I would assume the contractor has greatly misinterpreted recorded data, or scheduled maintanance has been neglegted for a number of years.</p><p></p><p>As a foot note the major cause of rcd failure was put down to contaminated contacts ie dust, simply dislodgement of this dust allowed most failed units to operate propely.</p></blockquote><p></p>
[QUOTE="green-hornet, post: 63135, member: 2683"] There was a thourough examination carried out by the electrical safety council on rcd,s about two years ago. They tested a hell of a lot more than you would have in all the schools. The results of the tests proved that about 80% of failed rcd's on site proved ok in the lab. Out of all failed units ony 1% proved a positive failure, and was mainly caused by poor maintenance. To say you have 53 failures would go against all recorded data on rcd tests carried out to date, and would in fact cause a major upset in the electrical industry, similar to an airline going down with no immediate reason. I would assume the contractor has greatly misinterpreted recorded data, or scheduled maintanance has been neglegted for a number of years. As a foot note the major cause of rcd failure was put down to contaminated contacts ie dust, simply dislodgement of this dust allowed most failed units to operate propely. [/QUOTE]
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