Want to install 30 inch electric range. What size wire is needed. 30 feet from panel

<Moved to it's own thread.>

If this is an electric household cooking appliance, and it is 12kW or under, it can be fed with a 40A circuit using #8 cable.
Is it 120/240v or 240v?

Stanforty has it, I always pull #6's, a little more expensive at installation, but allows more power with only a breaker change.