I have a sub panel that runs all household circuits other than HVAC. It is three wire, i.e. all neutrals and grounds bonded in subpanel. (not ideal, I know).

I am installing a new electric cooktop and oven and need to purchase wire. These are 4 wire appliances. Do I get 2+G wire or 3+G wire? The old range had 2+G wire with bare ground. Seems to me the bare ground would not be cool.

The manufacturer lists both 3 and 4 wire connections.

Btw, the cooktop calls for a 50 amp circuit. 8 or 6 awg?