Fence update - working between rain showers & with a pounding headache. <pout>
I've learned something odd about my charger. A good connection makes a different 'click' at the box. When I take the good lead-out wire off to try different options for using on the pasture fence, it gets much louder the instant the bad ones are connected.
It seems that the whole problem has been the buried romex lead-out wire between the charger box & the fence. It's obviously been compromised. I attached a 12" long piece of regular fence wire to the box. Then stretched an outdoor style extension cord between the box & the fence (roughly 50'). I wedged the ground prong of the plug into a twist of fence & then stuck the end of the little piece of fence into ground hole at the other end = fence checker read 7000 both at the temp cord connection & at the far end of the fence line.

I don't want to bury another line. I believe that I can run a new lead-out almost completely inside the barn by snaking it along the feed room wall, over the barn door & to the other corner of the barn - probably 50'+/-. The fence is literally just on the other side of that wall.
Now I need to decide what to use as a permanent replacement. Per the internet: romex isn't reccomended because of the higher voltage - & my personal experience agrees that it will fail eventually. Garden hoses also not recommended for the same reason (& because no one ever likes to reccomend using something for a completely 'wrong' use). Every source says to get typical 'under gate' wire, but I have a new piece of that & when I put that on the charger it instantly drops the output to 2000v. I'm guessing some sort of a break inside.
When I Google high voltage insulated wire I get lots of variations of under gate wire.
So what would yall recommend?
I'm highly tempted to go with plain old fence wire inside a garden hose (& listening to the charger's click along with regularly testing the fence) simply because it would be the fastest & cheapest to replace with materials I have on hand..... and it might last a good long while being inside (?)