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test RCD for RCBO
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<blockquote data-quote="Andy™" data-source="post: 522388" data-attributes="member: 2012"><p>you only need to test at the RCD, however its often easier to test at a point on the circuit, especially if its sockets. another major problem of testing at the RCD only is some faults & loads connected can interfere with the functionality oft he RCD, seen plenty that will fail a test (either trip times too long or doesnt trip) when tested on the circuit, but will pass at the terminals. some will say 'its suppsoed to be tested at the RCD/RCBO terminals so its good', but imo if it cannot pass in a real world fault then its faulty. after all, chances are, if you do get a shock, its not going to be at the RCBO terminals...</p></blockquote><p></p>
[QUOTE="Andy™, post: 522388, member: 2012"] you only need to test at the RCD, however its often easier to test at a point on the circuit, especially if its sockets. another major problem of testing at the RCD only is some faults & loads connected can interfere with the functionality oft he RCD, seen plenty that will fail a test (either trip times too long or doesnt trip) when tested on the circuit, but will pass at the terminals. some will say 'its suppsoed to be tested at the RCD/RCBO terminals so its good', but imo if it cannot pass in a real world fault then its faulty. after all, chances are, if you do get a shock, its not going to be at the RCBO terminals... [/QUOTE]
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