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  1. C

    63 amp socket Table 41.1

    Alright. So double checking that would mean a hard wired cooker could get away with 5 seconds, but a flex cooker would require 0.4 seconds? In the US almost all cookers have plugs on them.
  2. C

    63 amp socket Table 41.1

    To me that would mandate RCDs instead of reduced disconnection, but what do I know? ?
  3. C

    63 amp socket Table 41.1

    I guess that means added impedance increasing disconnection times?
  4. C

    63 amp socket Table 41.1

    Guess so, but I can't see the danger being more or less for a fixed 63 amp device vs one on a plug.
  5. C

    63 amp socket Table 41.1

    Does anyone know why 0.4 seconds was extended to 63 amp socket circuits? Is this because supply sources are getting stronger?
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    1616624338906.png

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  7. C

    Disconnection time extended to 63 amp circuits

    Does anyone know why the 0.8 and 0.4 second disconnection time requirements are now extended from 32 amp circuits to 63 amp receptacle circuits? Is this because the supply sources are getting stronger?
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    1616163446213.png

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    Comment by 'Cookie' in media 'Bathroom light.jpeg'

    I like those best with a globe ?
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  10. C

    Disconnection Time for IT system

    Makes sense now, thank you! :)
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    1616106613890.png

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  12. C

    Disconnection Time for IT system

    Right, but picture a 133/230Y TN system. Highest voltage to earth will be 133 volts no matter the network conditions.
  13. C

    Disconnection Time for IT system

    So basically TN vs IT? I can't picture at 133/230Y TN system needing the same disconection time as 230 volt IT. Both are none distributed neutral systems.
  14. C

    Disconnection Time for IT system

    Also, would it be to much to ask for a pic of the table regarding distributed and none distributed neutrals?
  15. C

    Disconnection Time for IT system

    Julie, mind blown! I had not realized the difference, now I see it. Can I ask- why does having the neutral distributed make a difference?What is the theory behind that?
  16. C

    Disconnection Time for IT system

    Its alright :) Table 41.1 doesn't seem to mention IT? Or am I way off in my observation?
  17. C

    Disconnection Time for IT system

    What is the max disconnection time for an IT system? I think it would be shorter in that an MCB would only be triggered after a fault on two individual circuits hence double the loop impedance?
  18. C

    Discolored Copper

    Who knows lol.
  19. C

    Discolored Copper

    Sadly nothing, however I've personally encountered this before (red color) and it was indeed copper all the way through. For some reason now and then US rolls of NM end up with odd color copper on one of the conductors.
  20. C

    Discolored Copper

    Right, but the AWG (mm2) is adjusted to take that into account.

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