I live in Florida and took on my dads 50yr old house. The breaker panel has been upgraded to a 200 amp box. All the single pole breakers are 20 amp but all my switches & outlets are 15 amp. Do I need to replace all my outlets & switches to 20 Amp? Like I said the house is 50yrs old & the wiring as far as I can tell is all 14 w/the exception of the Stove dryer a/c & hot water tank.