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S Plan Boiler ghost voltage?
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<blockquote data-quote="Phoenix" data-source="post: 510628" data-attributes="member: 8133"><p>I would expect that the only effect that the 'ghost'/capacitivly coupled voltage would have would be to be interpretted as the signal to run, afterall the terminal is expecting 230v, and what its getting is the faintest sniff of 230v connected through a capitance in the nF range! A decent hardware design enginneer would mitigate this though. So unlikely to be the issue unless its spurious turn ons you are having, or you have the switched live wrapped around a lightning conductor <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue :p" loading="lazy" data-shortname=":p" /> </p><p></p><p>The stray voltages can be eliminated by connecting a switch suppressor between SWL and N</p><p></p><p>It is possible that the boards are subseptible to spikes and surges in which case some sort of suppression would be usful, its very common these days to bit type 2 surge suppression at the consumer unit in Domestic premises, and if the supply to the boiler is less than 10m then that would be all thats required, over 10m then often a local type 3 devcie is recommend locally to sensitive equipment</p></blockquote><p></p>
[QUOTE="Phoenix, post: 510628, member: 8133"] I would expect that the only effect that the 'ghost'/capacitivly coupled voltage would have would be to be interpretted as the signal to run, afterall the terminal is expecting 230v, and what its getting is the faintest sniff of 230v connected through a capitance in the nF range! A decent hardware design enginneer would mitigate this though. So unlikely to be the issue unless its spurious turn ons you are having, or you have the switched live wrapped around a lightning conductor :P The stray voltages can be eliminated by connecting a switch suppressor between SWL and N It is possible that the boards are subseptible to spikes and surges in which case some sort of suppression would be usful, its very common these days to bit type 2 surge suppression at the consumer unit in Domestic premises, and if the supply to the boiler is less than 10m then that would be all thats required, over 10m then often a local type 3 devcie is recommend locally to sensitive equipment [/QUOTE]
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