Porcupine problem

[desA]

@desA, Are you talking about a HV electric fence type unit? The sleeves are lying on the floor, won't the system just earth? I don't know how you could keep the wires insulated.

If the ground is reasonably moist, then you only need the live carrier - use the ground as return. As long as the live line is kept off the ground, it should be fine. I'd make a few pipe sleeves/insulators to keep it on top of your water pipes.

An alternative is to even use a few lightly-clad lines running over your pipes. When porky bites again, it will get the full knock of the energiser on the first decent bite. In this case, use ground as the return - this is standard practice on farms.

You could use a smallish energiser - they are not that pricey. Give a nasty kick.