Re: CQD answer published Wednesday, August 10, 2018 - Temporary Feeder 2
Aerial cable such as Triplex, is not listed or labeled by a National Recognized Testing Laboratory (NRTL). It may be used up to the service drop since the NEC does not incorporate that part of the service system owned by the utility. From there on, Listed material must be used unless specifically allowed or sanctioned by other means.
I've heard of Four-Plex cable that allows for the insulated neutral wire (grounded conductor) to be carried with the messenger cable, normally used for the grounding conductor. However, I've yet to come across this method of wiring being described in the NEC for use.
Best Regards, Nick Abbatiello