I’m in the process of rewiring – replacing the old knob and tube – and would appreciate any thoughts of whether old BX cable and some older Romex (it has Anaconda markings on it – my impression is that they went under back in the 70s) should be replaced at the same time. The house was built in 1941. The BX is used in three circuits #1 is supplying the oven (50A circuit, #6 wire), #2 the water heater (30A circuit I believe, haven’t checked guage) and the dryer (30A circuit also). The old romex supplies the heater. The oven circuit is currently 3 wire. I understand the logic of going to 4 wire and the oven is new enough that it should accomodate the ground.
Any thoughts/advice here would be appreciated. Seems as though it would be a good time to get everything up to snuff. At the same time it doesn’t make sense to throw out good parts.