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Discuss just a thought! in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. sparky1ste
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    sparky1ste Guest

    if a socket outlet is rated at 13amps why do weputit on 32amps MCB
     
  2. telectrix
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    telectrix Scouser and Proud of It Respected Member

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    because the 32A MCB is protecting the cable that feeds several sockets.
     
  3. malcolmsanford
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    malcolmsanford Electrician's Arms

    You just had to answer .....................


    More to the point why do you have a 100amp switch and a 60amp main fuse ,eh tell me that
     
    Last edited: Feb 26, 2012
  4. telectrix
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    telectrix Scouser and Proud of It Respected Member

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    can't you tell i'm bored. and why do we have 10A light switches on 1 light when the whole circuit is on a 6A breaker.
     
  5. sparky1ste
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    So the accesories have nothing to do with it as long as we protect the cable in question. i had a lighting circuit the other day on 16 amp (normally bells starts to ring)Ref Method E Checkrd RegsMCB ok someone validated my cert. told me that should of failed because the light switch was only rated at 10amps
     
  6. telectrix
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    telectrix Scouser and Proud of It Respected Member

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    well then, "someone" is wrong. the MCB rating is selected to protect the cable. the light switch rating is selected to handle the load of the device it switches.
     
  7. Paul.M
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    Paul.M Electrician's Arms

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    Was it protecting 2.5mm by any chance?
     
  8. i=p/u
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    i=p/u Electrician's Arms

    16A is max allowed on lighting ciruit so is ok providing ...............
     
  9. Paul.M
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    Paul.M Electrician's Arms

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    Fare point, 1.5mm method E is up to 22A. Because its in cable tray it could be a long run and increased csa for volt drop.
     
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