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Do-It-Yourself (DIY) Question & Answer Forum
Change 30Ma Upfront To 100Ma Td
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<blockquote data-quote="steptoe" data-source="post: 388000" data-attributes="member: 7"><p>ok, so I have a job with a SWA feeding an outbuilding,</p><p></p><p>30mA RCD feeding a sole feed to this,</p><p></p><p>nuisance tripping is a massive issue,</p><p></p><p>Ive measured the leakage current at 22mA [ive started another thread on this]</p><p></p><p>does anyone see why this really needs to be a 30mA RCD? and not a 100mA TD?</p><p></p><p>in the outbuilding we have 5 x double sockets, all 30mA self contained RCD, and 1 x maintained emergency light,</p><p></p><p>all wired in SWA or armoured flex,</p><p></p><p>although the terminations of the flex or existing SWA is TBC, I'm doubtful if its been done correctly TBH,</p><p></p><p>2 of the SWA connections [i havent looked at any more] , on a visual, have been banjo'd to a plastic enclosure,,,,,,,,,,</p><p></p><p>the armoured flex simply appears to have been stuffing glanded,,,,,,,,,</p><p></p><p>now, the point of asking is this,</p><p></p><p>this in an educational establishment, does that throw up extra regulations?</p><p></p><p>kids/the general public having access?</p><p></p><p>I wouldnt have an issue with a normal commercial/industrial environment,</p><p></p><p>just wondering if the supply cable requires 30mA protection due to the type of installation,</p><p></p><p>Im not 100% on the source protective device,</p><p></p><p>but the 16mm sub to the outbuilding is terminated to an enclosure with a main switch and a B20,</p><p></p><p>many thanks.</p></blockquote><p></p>
[QUOTE="steptoe, post: 388000, member: 7"] ok, so I have a job with a SWA feeding an outbuilding, 30mA RCD feeding a sole feed to this, nuisance tripping is a massive issue, Ive measured the leakage current at 22mA [ive started another thread on this] does anyone see why this really needs to be a 30mA RCD? and not a 100mA TD? in the outbuilding we have 5 x double sockets, all 30mA self contained RCD, and 1 x maintained emergency light, all wired in SWA or armoured flex, although the terminations of the flex or existing SWA is TBC, I'm doubtful if its been done correctly TBH, 2 of the SWA connections [i havent looked at any more] , on a visual, have been banjo'd to a plastic enclosure,,,,,,,,,, the armoured flex simply appears to have been stuffing glanded,,,,,,,,, now, the point of asking is this, this in an educational establishment, does that throw up extra regulations? kids/the general public having access? I wouldnt have an issue with a normal commercial/industrial environment, just wondering if the supply cable requires 30mA protection due to the type of installation, Im not 100% on the source protective device, but the 16mm sub to the outbuilding is terminated to an enclosure with a main switch and a B20, many thanks. [/QUOTE]
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Change 30Ma Upfront To 100Ma Td
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