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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Popping MCB
Hi all
Noticed a light pop when I reset an MCB yesterday - is this usual? The MCB is protecting the upstairs ring main and I guess that there are a few pieces of kit "turned on" ready to draw power as soon as the breaker is latched in (clock radios, alarm panel etc). TIA Phil |
#2
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Popping MCB
"TheScullster" wrote in message . uk... Hi all Noticed a light pop when I reset an MCB yesterday - is this usual? The MCB is protecting the upstairs ring main and I guess that there are a few pieces of kit "turned on" ready to draw power as soon as the breaker is latched in (clock radios, alarm panel etc). TIA Phil When lamps go, they usually go when tuned on, due to the sudden temperature shock to the filament, so I would expect the fact it went when you turned it on via the MCB, rather than the normal switch was just chance! Toby... |
#3
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Popping MCB
On Mon, 12 Oct 2009 09:32:24 +0100, Toby wrote:
Noticed a light pop when I reset an MCB yesterday ... When lamps go, they usually go when tuned on ... Ooo, I read the first as a small popping noise from the MCB when it was reset not a lamp failing at switch on. Which is it? -- Cheers Dave. |
#4
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Popping MCB
"Dave Liquorice" wrote Ooo, I read the first as a small popping noise from the MCB when it was reset not a lamp failing at switch on. Which is it? -- Yes, Dave, as the subject header, it was the MCB making a popping noise as it was reset. Any thoughts? Phil |
#5
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Popping MCB
"John Rumm" wrote If there is a load on it when you close it, then yes, you might get a noise. It normally needs to be a fairly high load and/or a fairly inductive one though. -- Thanks John - can you give me examples of likely inductive loads in domestic setting please? I am not sure now whether it was the upstairs or downstairs ring that caused this issue. Phil |
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