A single$-$phase, $240-$volt, $10,$ central air$-$conditioning unit has a compressor with an RLC of $18\mathrm{.}9$ amps, and a $1/4$ hp fan. The nameplate shows that the minimum circuit ampacity is $29\mathrm{.}1$ amps, and the maximum fuse or circuit breaker size is $50$ amps. The minimum size Romex$($NM Cable$)$ that can be installed to the unit isAWG. The cable conductors have THHN$/$THWN insulation