I just ran my 100Amp #2Ga - 4 conductor wires (which all 4 conductors were in a jacketed cable) in a 2" PVC pipe, from my new Sub Panel to the main 200A house panel in the garage (only about 6 ft in the PVC pipe, the rest of the run is in the wall)

My question is, I need to run another 12/2 romex from the main panel in the garage, to the new outside mini split heat pump unit which is located along side the new addition. Can I run this single 12/2 romex wire in the same 2" PVC pipe as the new service wire is in? (from the Garage main panel to the addition wall,, then I will run it separately within the wall studs to the outside location) There seems to be plenty of room in the 2" pipe, just wasn't sure if that's allowed>? :confused:

Thanks
AJ ;)

I did the calcs to see if the SER cable and the 12-2 Romex will fit within the 40% allowable fill of the 2" conduit, and yes, it will fit.