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Power Shower Tripping Rcd
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<blockquote data-quote="r6kev" data-source="post: 320746" data-attributes="member: 14552"><p>Hi guys</p><p></p><p>I have a customer with a Mira Vigour power shower (hot and cold water feed, &amp; 1.5mm T&amp;E elctrical supply via an inline stand alone rcd)</p><p></p><p>He says it was all fitted as part of his bathroom refurb just 18 months ago.</p><p></p><p>Recently he kept coming to it and finding it had no power. He's an OAP, and the RCD has been fitted in the loft, above the shower, so he called me in the first instance. I reset the rcd 3 times in as many weeks.</p><p></p><p>I disconnected from the rcd, and did an insulation resistance test (between L and earth, and between N and earth) firstly on the cable alone, then on the cable with the shower unit connected. All seemed fine, (&gt;299 ohms).</p><p></p><p>So I replaced the RCD (less than 20 quid), All was fine for a week, then the new RCD tripped..!</p><p></p><p>I went back today and retested the cable alone, then the with the shower unit connected (with the dial turned on to activate the microswitch), and again all results were &gt;299 ohms..</p><p></p><p>My test results and my logic are saying it must be an earth fault on the shower unit once it's been running..</p><p></p><p>But, it's only 18mths old, it's a very reputable brand, and it's £240 to buy a new one so I don't want the poor old buger wasting that kind of money on my say so! Also he says it never cuts out while he's using it, it's just periodically dead when he comes to it..</p><p></p><p>so, duff shower unit, or other cause?</p><p></p><p>Thanks for your ideas guys,</p><p></p><p>Kev</p></blockquote><p></p>
[QUOTE="r6kev, post: 320746, member: 14552"] Hi guys I have a customer with a Mira Vigour power shower (hot and cold water feed, & 1.5mm T&E elctrical supply via an inline stand alone rcd) He says it was all fitted as part of his bathroom refurb just 18 months ago. Recently he kept coming to it and finding it had no power. He's an OAP, and the RCD has been fitted in the loft, above the shower, so he called me in the first instance. I reset the rcd 3 times in as many weeks. I disconnected from the rcd, and did an insulation resistance test (between L and earth, and between N and earth) firstly on the cable alone, then on the cable with the shower unit connected. All seemed fine, (>299 ohms). So I replaced the RCD (less than 20 quid), All was fine for a week, then the new RCD tripped..! I went back today and retested the cable alone, then the with the shower unit connected (with the dial turned on to activate the microswitch), and again all results were >299 ohms.. My test results and my logic are saying it must be an earth fault on the shower unit once it's been running.. But, it's only 18mths old, it's a very reputable brand, and it's £240 to buy a new one so I don't want the poor old buger wasting that kind of money on my say so! Also he says it never cuts out while he's using it, it's just periodically dead when he comes to it.. so, duff shower unit, or other cause? Thanks for your ideas guys, Kev [/QUOTE]
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