Saturday, August 13, 2016

Which is more dangerous: AC or DC power?






  • AC can flow through capacitance, DC cannot.
  • Our bodies has some resistance as well as capacitance. When DC is applied our body only offers resistance. When AC is applied, due to the capacitance a higher current will flow compared to the same voltage in DC.
  • At very high frequency AC, the body becomes poor in conduction due to skin effect.
  • While it may take a much higher voltage for DC to be fatal, once you reach such high voltage - DC is much more dangerous than AC. As the current it delivers is continuous unlike AC which goes up and down.
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