Steve,
The test idea is good, but i've got to replace it no matter what. If it fails again the repair will be easier as I am installing a j-box to make this repair.
Non-conductive fiber is permitted in with ANY voltage.
I've though about some heat trace, but this is in the middle of nowhere and I don't think the existing power source will support any additional load. The run is 150' and so 3 watt per foot heat trace would add 450 watts and this would push the voltage drop up too much.
Don(resqcapt19)
