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Unfused spur.

Hello All,


Could an unfused R.C.D. protected spur, from a complient ring final circuit, supplying a single outdoor socket via 1.5mm2 6242Y cable of max. length 300mm through a brick wall from an indoor socket outlet be considered compliant?


Z.
Parents
  • I am unclear about the energy let-through subject. I squared t, or A squared t. (Amp2 seconds).


    I understand current and I understand time. Where did the current squared originate? ( I do know the origin of I squared R if that is similar).


    Also, are the values of current R.M.S. values? Which would give a heating effect the same as if the values used were D.C?


    As the value of Voltage changes over a cycle or two, will the energy let through value  alter as well, rather than being a fixed "packet" of energy? Or are we taking an average value of energy let-through over a period of time?


    I can not see us using instantaneous values for an event that takes place over a period of time.




    Thanks,


    Z.


Reply
  • I am unclear about the energy let-through subject. I squared t, or A squared t. (Amp2 seconds).


    I understand current and I understand time. Where did the current squared originate? ( I do know the origin of I squared R if that is similar).


    Also, are the values of current R.M.S. values? Which would give a heating effect the same as if the values used were D.C?


    As the value of Voltage changes over a cycle or two, will the energy let through value  alter as well, rather than being a fixed "packet" of energy? Or are we taking an average value of energy let-through over a period of time?


    I can not see us using instantaneous values for an event that takes place over a period of time.




    Thanks,


    Z.


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