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• AC mains, Current, Voltage drop, calculator
  Posted by Tom Scott on 12/10/08

  I do a bit of electrical work on the side and am stumped every now and again by the current rating of cables. Recently a customer had wired up 4mm Twin and Earth to a 32 Amp MCB, "Is this correct", I thought. General Cable New Zealand has a FREE useful calculator.

  You can get it from

  http://www.generalcable.co.nz/newzealand/NZDownloads/Gencalc.asp.