even though romex contains thhn, it needs to be thwn, or any wire with 'w'. a typically asinine code distinction.
of course, romex can be skinned and used in the disconnect itself, but not the flex. it is fine in any 3R panel or box, but not in flex.
he also didnt like the murray breaker that i believe is made by siemens. no big deal. i knew that, but the contractor likes to buy breakers to save my $3 mark-up.
no wonder i'm so bitter. lol.