Can a green wire be used as hot if it's reidentified?
Absolutely not, for 2 reasons.

You need the ground for ground!  That metallic jacket is NOT a suitable ground, that's why there's a ground wire.

You are not allowed to re-mark wires that are smaller than 4 AWG (which is huge) with the solitary exception of &quot;marking white to a hot if it's in cable&quot;.


What you should do is instead, run flexible metallic conduit (FMC) and run the individual THHN wires that you need for your application.