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   rec.audio.tech      Theoretical, factual, and DIY topics in      41,683 messages   

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   Message 40,785 of 41,683   
   David Looser to Jerry   
   Re: Why does discussion always tend towa   
   04 Jan 12 12:09:53   
   
   XPost: uk.tech.broadcast, uk.tech.digital-tv, uk.rec.audio   
   XPost: sci.electronics.repair   
   From: david.looser@btinternet.com   
      
   "Jerry"  wrote in message   
   news:je1bne$8id$3@dont-email.me...   
   >   
   > "David Looser"  wrote in message   
   > news:9mifvpFemsU1@mid.individual.net...   
   >   
   >    
   > : I was singularly unimpressed with Italian mains safety. The 10A   
   > plug has 3   
   > : thin pins with no support for the plug other than that provided   
   > by the pins,   
   > : so the plugs tend to hang half-out of the socket due to the   
   > weight of the   
   > : flex. No shutters, no plug-top fuses and in the (modern)   
   > installation I saw   
   > : large numbers of sockets were all wired to a single fuse or   
   > circuit breaker   
   > : of significantly higher rating that of the plug & socket.   
   > :   
   >   
   > But how is that any different to some idiot in the UK bridging   
   > out the fuse in a BS1363 plug and then using 3A cable to string a   
   > large number of trailing sockets together, a prospect that has   
   > increased since the introduction of "Part P" in the UK   
   > (especially in hazardous areas such as wet areas and kitchens).   
      
   Well now, for starters there is poor retention in the socket for the Italian   
   plug, something for which the BS1363 design is particularly good. Also the   
   Italian plug is reversable, so its live/neutral polarity is a matter of   
   luck. Then the pins of the Italian plug are not sleeved, whilst all new   
   BS1363 plugs have been for for many years now.   
      
   I don't follow your logic that a safety device becomes a bad thing just   
   because some idiot somewhere will go out of his way to defeat it. The   
   overwhelming majority of BS1363 plugs are fused no higher than 13A, I don't   
   accept that the improved safety of the sensible majority is somehow   
   cancelled out by the actions of the occasional idiot.   
      
   As for your allegation that the introduction of Part P results in an   
   increase in the incidence of strings of trailing sockets wired with 3A cable   
   in hazardous areas, this seems to be another example of your notion that   
   safety rules are a bad thing because some idiot somewhere will ignore them.   
   >   
   > Perhaps you might care to place your comments about Italian   
   > electrical safety into some perspective, if it really is as   
   > dangerous as you claim, would you like to cite a reference for   
   > the number of electrical fires caused by such instillation   
   > practises?   
      
   I said that I was unimpressed with Italian electrical safety, which is true.   
   I made no claims about statistics. What I do know is that an Italian   
   installation would fail a UK electrical safety check.   
   >   
   > Only the ill-informed or idiots (those without common sense) make   
   > something unsafe.   
      
   A comment that seems at odds with your repeated assertions that BS1363 plugs   
   are unsafe because some idiot somewhere might link-out the fuse!   
      
   > As long as the rating of the socket or   
   > conductor is not exceeded then there is no problem surely. I note   
   > that you failed to specify the cross sectional dimension of   
   > conductor used in these Italian instillations...   
   > --   
      
   I did indeed "fail to specify" that, because I don't know what it was. But I   
   do know what conductor sizes were used on the flexes connected to those   
   plugs which was frequently 0.5 sqmm.  Not adequate, I think, to handle up to   
   25A of fault current from a defective appliance. In the UK a flex of that   
   cross-section *should* be connected via a plug fused at 3A or less. OK, I   
   accept that many are actually fused at 13A (though less so now that new   
   appliances must have factory-fitted plugs) but I think that a less than   
   perfect safety system is better than no system at all.   
      
   David.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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