You really mean 120v right? If you are doing a reno or new perhaps they are suggesting prewiring for the day someone would like an electric range instead needing 240v or 208v instead of limiting the available power to "120v" now with big expenses later for changes.

or else you mean 20 amps for the wiring/circuit breaker.

sorry, i don't know anything about electrical to form a proper question. i'm just the cook. anyway, they are questioning whether it should really be only 20 amps for the wiring and circuit breaker. TIA.

It depends on the appliance - double check with the manufacturer or the installation guide - but for an all gas range 20 amps is probably sufficient - all the electricity is for is the burner ignitors, the oven light and convection fan, if any. If it were a dual fuel range, then you'd need 240V.

thanks very much, weissman. the range is all gas so 20 amps seems more than adequate. spec sheet actually lists 13.6 i believe.