Home » English riddles » Transmission Line » Transmission Line Riddle No.1 – Speed of Power transmission » Reply To: Transmission Line Riddle No.1 – Speed of Power transmission Reply To: Transmission Line Riddle No.1 – Speed of Power transmission 2021-08-03 at 11:08 am #2219 GLAVIZH The velocity of electrical power transmission is nealy 90% light velocity . Thus , it takes nearli 3 milli seconds .