Home » English riddles » Protection » Protection Riddle No.44 – Bad designing of protection circuit and disastrous accident in power plant » Reply To: Protection Riddle No.44 – Bad designing of protection circuit and disastrous accident in power plant Reply To: Protection Riddle No.44 – Bad designing of protection circuit and disastrous accident in power plant 2021-08-03 at 11:08 am #1112 Hamid I’d chose #3 in regard to mentioned problem. why?