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Weird high frequency noise from conduit?
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<blockquote data-quote="Blue Duck" data-source="post: 456684" data-attributes="member: 8071"><p>Trying to get an SWA in a riser, well I'm trying to but the chippy who is supposed to be helping me keeps wondering off! headbang </p><p></p><p>Anyhow, halfway up the riser I noticed a high pitched whine coming from the conduits feeding the flats above.</p><p></p><p>I was a little concerned so I checked the distribution cupboard and had a listen further up the riser and nothing, just in the middle. :C </p><p></p><p>It's an ancient setup, all Bill switchgear and imperial cables, VIR yum.</p><p></p><p>There is also a Porn &amp; Dunwoody lift. :lol: </p><p></p><p>There is fire alarm and EM lighting cabling running up the riser but it only happens in the middle? </p><p></p><p>Weird!</p><p></p><p>Any ideas? </p><p></p><p>[ATTACH]8956[/ATTACH]</p><p></p><p>[ATTACH]8957[/ATTACH]</p></blockquote><p></p>
[QUOTE="Blue Duck, post: 456684, member: 8071"] Trying to get an SWA in a riser, well I'm trying to but the chippy who is supposed to be helping me keeps wondering off! headbang Anyhow, halfway up the riser I noticed a high pitched whine coming from the conduits feeding the flats above. I was a little concerned so I checked the distribution cupboard and had a listen further up the riser and nothing, just in the middle. :C It's an ancient setup, all Bill switchgear and imperial cables, VIR yum. There is also a Porn & Dunwoody lift. :lol: There is fire alarm and EM lighting cabling running up the riser but it only happens in the middle? Weird! Any ideas? [ATTACH]8956._xfImport[/ATTACH] [ATTACH]8957._xfImport[/ATTACH] [/QUOTE]
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Weird high frequency noise from conduit?
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