I need to run 4160V feeds to some power vaults. Each Power vault requires three power feeds, a ground and a control cable. I've got existing 4 conduits.but I cannot find a cable small enough and think I need to retrench and run new conduit to at least 5, maybe 6 Anyone got a miracle solution ?
You need to Re-State your question, since as it is, it makes no sense whatsoever. ;-(
If you're dealing with 4000+volts of power ( I assume thats what you mean, 460 3ph isn't really high voltage and you shouldn't have a problem running that through 4 conduit so) You should either know what you are doing or go to someone who does - you should not be looking for an answer on here. There is no miracle solution when dealing with that much power.
You will need to know the amperage draw of each vault to know the correct size wire to use. Once you have chosen the correct wire, then you will need to see how many would fit into a 4 conduit, along with the control cable. I don't know if you misprinted when you wrote 4160 volts, or if you meant 460 3 phase, or 4 runs of 160 volts.
