I have three devices that I need connected. They are about 30 m away. Conduit space is limited so I want to try to get a single, multi core cable through for all of this.
What I need to run:
220 V from point A to B (110 V per cable): to power an ATS switch that requires 220 V (two 110 VAC lines) to power the switch. (not sure of the power draw during the switch, but it's < 50ms and should be almost zero draw when idle.)
110 V from point B back to point A: One of the first leads will run through a switch to return the current to a contactor in point A (total of 60 m). The contactor will be NO, but almost always closed. Tech docs say rated coil consumption = 41 mA (Finder 18.104.22.168.4310 https://www.alliedelec.com/m/d/b42d7d884ebd43b9b8adf24d963c352e.pdf)
Three lines from an Arcel power meter. One is groups so I assume I can just ground it locally on both point A and B, and the docs say 30 mA and even an ethernet cable will work. But maybe if the cables are all together it might cause interference? (http://net.acrel-electric.com/download/common/upload/2020/10/23/10943xy.pdf)
If I can use a single ethernet cable (22 AWG?) or a 5 or 6 lead 18 AWG cable, that would be perfect, I'm just not sure if there is any concern. I'd put a 1 A breaker on both the four leads leaving point A.