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Fountain tripping RCD
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<blockquote data-quote="NeilBell" data-source="post: 498060" data-attributes="member: 32858"><p>Thanks for all your replies. I did think when writing the post that I might get some stick over my bucket 'test procedure'!! The reason for doing it was that the pump flex is about 10m long but only about 1m is needed to connect into the junction box, therefore I thought that if I could pinpoint the earth leakage point I may be able to cut the flex shorter and reconnect. I assumed it was reasonably safe as the flex has an earth conductor, but clearly my reasoning was flawed. I can only assume the live wire insulation has broken down inside the flex but the earth has not - does that sound feasible?</p><p></p><p>The bit that still confuses me is that the pump tripped the RCD all the time with the original armoured cable, occasionally with extension lead 1 and rarely with extension lead 2. The only explanation I can think of is accumulated earth leakage, partly due to the cable and partly due to the pump flex. Any thought on this would be appreciated as I would like to avoid spending £120 on a new pump and then find there is still an issue. I also would really like to fully understand whats going on for my own peace of mind.</p><p></p><p>Cheers Neil</p></blockquote><p></p>
[QUOTE="NeilBell, post: 498060, member: 32858"] Thanks for all your replies. I did think when writing the post that I might get some stick over my bucket 'test procedure'!! The reason for doing it was that the pump flex is about 10m long but only about 1m is needed to connect into the junction box, therefore I thought that if I could pinpoint the earth leakage point I may be able to cut the flex shorter and reconnect. I assumed it was reasonably safe as the flex has an earth conductor, but clearly my reasoning was flawed. I can only assume the live wire insulation has broken down inside the flex but the earth has not - does that sound feasible? The bit that still confuses me is that the pump tripped the RCD all the time with the original armoured cable, occasionally with extension lead 1 and rarely with extension lead 2. The only explanation I can think of is accumulated earth leakage, partly due to the cable and partly due to the pump flex. Any thought on this would be appreciated as I would like to avoid spending £120 on a new pump and then find there is still an issue. I also would really like to fully understand whats going on for my own peace of mind. Cheers Neil [/QUOTE]
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