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RCD tripping more since route of supply changed!
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 80971" data-attributes="member: 250"><p>IMHO assuming you are a "Competent Person" its about as safe as doing a Ze test....Earth disconnected from installation!</p><p></p><p>Or</p><p></p><p>Doing a Zs on a live installation deliberately putting a voltage down the Earth/CPC!</p><p></p><p>Or</p><p></p><p>Opening up any live equipment to get you meter probes on to take some readings!</p><p></p><p>How else could you find out any leakage current value?</p><p></p><p>(other than Two clamp meters around each of the L &amp; n tails! &amp; minus any difference.)</p><p></p><p>If I were doing this, I would be at the CU, turn individual circuits on one at a time... whilst watching my meter to see if any readings appear...</p><p></p><p>Don't forget we are only talking milliamps.....</p><p></p><p>If you'd of had 1 amp or more flowing down the earth wire Your RCD would never set in the first place...</p><p></p><p>Most typical Clamp on Ampmeters dont get much good accuracy below 0.5amps!</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 80971, member: 250"] IMHO assuming you are a "Competent Person" its about as safe as doing a Ze test....Earth disconnected from installation! Or Doing a Zs on a live installation deliberately putting a voltage down the Earth/CPC! Or Opening up any live equipment to get you meter probes on to take some readings! How else could you find out any leakage current value? (other than Two clamp meters around each of the L & n tails! & minus any difference.) If I were doing this, I would be at the CU, turn individual circuits on one at a time... whilst watching my meter to see if any readings appear... Don't forget we are only talking milliamps..... If you'd of had 1 amp or more flowing down the earth wire Your RCD would never set in the first place... Most typical Clamp on Ampmeters dont get much good accuracy below 0.5amps! [/QUOTE]
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RCD tripping more since route of supply changed!
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