If you run it through a power conditioner, which all us Audiophiles do...right??, twisting the wire etc..should be a moot point.
I also don't see the point in twisting the hot, nuetral and ground together other than to keep them together. This is not a data cable and twisting it will not eliminate the hash noise off the AC or do anything to correct the PF.
Perhaps there is another reason for doing it?