This is quite an interesting read, although my eyebrows shot up after reading their plan to run 1kV on each of two wires + ground, that are only insulated for 600V...even if the pvc adds some insulation (i couldn't find the actual numbers off hand), anywhere the wire comes out of the conduit, it will risk breaching the insulation, no?
There's a lot of safety margin built into standard wire insulation. I've exceeded the ratings pretty severely with no ill effects. My concern, were this my project, would be long-term wear on the insulation. 1,000 volts is gonna HURT. 480 hurts bad enough.
line-line potential is 2kV so the wear is worse between conductors. The only saving grace is the current is so low that the wire will see almost no heating which almost eliminates thermal stress.
Am I right then in assuming each wire's insulator provides 600V isolation so two side-by-side would provide 1200V isolation, and the PVC is additional on top of that?
