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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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Electric Shock with RCD
Today I experienced an electric shock in my house, after I touched a bare
cable, which I had foolishly left exposed. The cable touched my leg and I had a heck of a jolt up my body which pushed me out of the way. I am now wondering why the RCD did not trip. Last year a contactum split load CU was fitted, the cable which I touched is on the RCD side. Could there be a problem somewhere, or was the shock I had below the trip current? Any ideas? Thanks Andrew |
#2
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Electric Shock with RCD
"Andrew Barnes" wrote in message .. . | Today I experienced an electric shock in my house, after I touched a bare | cable, which I had foolishly left exposed. The cable touched my leg and I | had a heck of a jolt up my body which pushed me out of the way. | | I am now wondering why the RCD did not trip. Last year a contactum split | load CU was fitted, the cable which I touched is on the RCD side. Could | there be a problem somewhere, or was the shock I had below the trip current? | | Any ideas? | | Thanks | | Andrew | Hi I'd expect that the shock was probably less than the trip current. If that's a 100mA RCD then it's hardly surprising. However, if you're worried re the RCD then best to get it tested. I assume that you have the test records from the installation which show that it was working when installed? Also, you should take more care! Shouldn't really have exposed live conductors around to touch and circuits should be isolated (and discharged) before working on them. J |
#3
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Electric Shock with RCD
"Me" wrote in message ... "Andrew Barnes" wrote in message .. . | Today I experienced an electric shock in my house, after I touched a bare | cable, which I had foolishly left exposed. The cable touched my leg and I | had a heck of a jolt up my body which pushed me out of the way. | | I am now wondering why the RCD did not trip. Last year a contactum split | load CU was fitted, the cable which I touched is on the RCD side. Could | there be a problem somewhere, or was the shock I had below the trip current? | | Any ideas? | | Thanks | | Andrew | Hi I'd expect that the shock was probably less than the trip current. If that's a 100mA RCD then it's hardly surprising. However, if you're worried re the RCD then best to get it tested. I assume that you have the test records from the installation which show that it was working when installed? Also, you should take more care! Shouldn't really have exposed live conductors around to touch and circuits should be isolated (and discharged) before working on them. J Yep !!! This one was your warning, the next one might be worse if you carry on exposing live cables in easy reach. Always a good idea, especially if you're going to work on cables that will become live when your testing others that are connected, is to wrap a piece of insulting tape around them before you make the circuits live again for your test. --- www.basecuritysystems.no-ip.com Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.528 / Virus Database: 324 - Release Date: 16/10/03 |
#4
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Electric Shock with RCD
"BigWallop" wrote in message news "Me" wrote in message ... "Andrew Barnes" wrote in message .. . | Today I experienced an electric shock in my house, after I touched a bare | cable, which I had foolishly left exposed. The cable touched my leg and I | had a heck of a jolt up my body which pushed me out of the way. | | I am now wondering why the RCD did not trip. Last year a contactum split | load CU was fitted, the cable which I touched is on the RCD side. Could | there be a problem somewhere, or was the shock I had below the trip current? | | Any ideas? | | Thanks | | Andrew | Hi You don't say what exactly you touched. If you contacted bare live and neutral, then the RCD "sees" you as a normal and legitimate load, and will not trip. This will only happen if current from either live or neutral finds an abnormal return path, normally via an earth. Charles Fearnley |
#5
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Electric Shock with RCD
"Charles Fearnley" wrote in message ... You don't say what exactly you touched. If you contacted bare live and neutral, then the RCD "sees" you as a normal and legitimate load, and will not trip. This will only happen if current from either live or neutral finds an abnormal return path, normally via an earth. Perhaps the old description 'Earth leakage' was more informative than 'Residual Current' |
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Electric Shock with RCD
"Chris Oates" wrote in
: Perhaps the old description 'Earth leakage' was more informative than 'Residual Current' I think you're right, but the great and the good prolly thought we wouldn't get the idea and try to connect it across earth. Like Swiss bankers couldn't understand Lsd, so we had to go metric :-( mike r |
#7
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Electric Shock with RCD
"BigWallop" wrote in message ...
a piece of insulting tape around them Heh, not heard that one before. Regards, NT |
#8
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Electric Shock with RCD
"N. Thornton" wrote in message om... "BigWallop" wrote in message ... a piece of insulting tape around them Heh, not heard that one before. Regards, NT LOL !!! Oops !!! Insulating tape would be more appropriate, wouldn't it ? :-)) |
#9
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Electric Shock with RCD
"BigWallop" wrote in message ...
"N. Thornton" wrote in message om... a piece of insulting tape around them Heh, not heard that one before. LOL !!! Oops !!! Insulating tape would be more appropriate, wouldn't it ? :-)) No, I'll be calling it insulting tape now Good one. Regards, NT |
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