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RCD Tests
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<blockquote data-quote="Doc Hudson" data-source="post: 430916" data-attributes="member: 1607"><p>The majority of the time RCD's will test out perfectly without disconnecting anything. However in this instance the OP has had some apparent inconsistent test results and has tried swapping RCD's. Yet from how I read it has not actually verified either RCD works within specification under no load conditions. We need to identify if the RCD, the circuit or the test meter is introducing these irregular results. The 11.1 guidance takes the circuit out of the equation. In the real world when genuine faults occur there is probably far more current flowing through the RCD than the amount generated under RCD test conditions. Sometimes a combination of meter sensitivity and various circuit factors can lead you up the garden path, unless you step back to check individual items first. I am guessing 11.1 must have been included for this reason, possibly the sort of issues the OP is referring to?. </p><p></p><p>Doc H </p></blockquote><p></p>
[QUOTE="Doc Hudson, post: 430916, member: 1607"] The majority of the time RCD's will test out perfectly without disconnecting anything. However in this instance the OP has had some apparent inconsistent test results and has tried swapping RCD's. Yet from how I read it has not actually verified either RCD works within specification under no load conditions. We need to identify if the RCD, the circuit or the test meter is introducing these irregular results. The 11.1 guidance takes the circuit out of the equation. In the real world when genuine faults occur there is probably far more current flowing through the RCD than the amount generated under RCD test conditions. Sometimes a combination of meter sensitivity and various circuit factors can lead you up the garden path, unless you step back to check individual items first. I am guessing 11.1 must have been included for this reason, possibly the sort of issues the OP is referring to?. Doc H [/QUOTE]
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