Generator inlet conduit

[Jatgm1]

What kind of wire conduit would you use with a generator inlet? Specifically the reliance controls pb30? Im trying to run it from an inlet port to an outlet port. The four wire Romex or whatever is litterally connected to a 240v l14-30 outlet inside my apartment. So I wanted to put that box on the wall behind my generator and then run metal wire conduit to the wire outside my apartment and just wire it in. (It's a totally isolated circuit btw) so I guess could someone show me what wire conduit to use? Like what will work with the punch out?
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[Megawatt]

What kind of wire conduit would you use with a generator inlet? Specifically the reliance controls pb30? Im trying to run it from an inlet port to an outlet port. The four wire Romex or whatever is litterally connected to a 240v l14-30 outlet inside my apartment. So I wanted to put that box on the wall behind my generator and then run metal wire conduit to the wire outside my apartment and just wire it in. (It's a totally isolated circuit btw) so I guess could someone show me what wire conduit to use? Like what will work with the punch out?
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Jatmn you wound be better off to put it in PVC conduit 3/4 and flex it in to the generator. You could go to Home Depot and buy 8/3 with ground romex and it’s approved for out door use and direct burial