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Another question for the more wise??
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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 510831" data-attributes="member: 250"><p>Think you maths is a bit lacking IMHO..</p><p></p><p>i.e.</p><p></p><p>1.0Meg = 1,000,000ohms</p><p></p><p>and 0.05Meg ohms = 50,000ohms or 50kohms</p><p></p><p>30ma @ 230v is around 7,666.66ohms or 7.7kohms</p><p></p><p>30ma @ 240v is around 8,000ohms or 8kohms</p><p></p><p><span style="color: #e74c3c"><em><u>an IR reading of 0.00Meg can still be above a sufficiently low resistance to trip a 30ma RCD. </u></em></span></p><p></p><p>As 0.0099 Meg is 9,999ohms which reads as 0.00Meg on your IR Test..</p><p></p><p>e.g. even a 10kohm resistance to Earth may not trip a 30ma RCD..</p><p></p><p>as 230v / 10,000ohms = 23ma!! </p><p></p><p>Is this just a dual RCD board or full RCBO?</p><p></p><p> :C</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 510831, member: 250"] Think you maths is a bit lacking IMHO.. i.e. 1.0Meg = 1,000,000ohms and 0.05Meg ohms = 50,000ohms or 50kohms 30ma @ 230v is around 7,666.66ohms or 7.7kohms 30ma @ 240v is around 8,000ohms or 8kohms [COLOR=#e74c3c][I][U]an IR reading of 0.00Meg can still be above a sufficiently low resistance to trip a 30ma RCD. [/U][/I][/COLOR] As 0.0099 Meg is 9,999ohms which reads as 0.00Meg on your IR Test.. e.g. even a 10kohm resistance to Earth may not trip a 30ma RCD.. as 230v / 10,000ohms = 23ma!! Is this just a dual RCD board or full RCBO? :C [/QUOTE]
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