Need to move a freestanding range/oven and have to move wiring as well, house is 50+ years old and had a new panel put in 2 years ago, the electrician put the range on a 50 amp circuit and reused the old cloth wrapped wire (aluminum) I am positive that the wire is to small for a 50 amp circuit (appears to be in between #4 and #8) . In addition the wiring itself is in bad condition (covering is unraveling in several spots)
I need to move it and would like to rewire at the same time, the run is approximately 50 feet, what size wiring should I use (I'm guessing #4 for copper). What size if I use aluminum again?