Insulated Wire and Underground Cable is a product that is used often when building electric hi-tensile fence systems. We recommend using it at your connections at your ground rod system back to the energizer. It goes under gateways. It can and should be used for your lead out wires and jumpers.
Both are generally class III coated wire inside insulative sleeves or jackets. They are very tough and come in both single wall or double wall configurations.
For going UNDERGROUND we highly recommend that you install it inside a conduit of some type. This allows for added protection, plus will aid you down the roadshould there be a problem in this area. If it is inside a conduit, then it could be easily removed while pulling through another wire. For conduit you can use either PVC tubing or Black HDPE pipe. The ends should be closed off so no water gets in and fill the conduit. We prefer the HDPD pipe, as it is so easy to install. You can run it up your gate posts, then bend downward, thus sealing it off.
If you decide to direct bury the underground cable, (without conduit) then we recommend that you use the Double Wall Insulated Cable. Our numbers on our insulated wire is GU100 or GU500 for the Thick Wall Single Insulated Wire. And GUHD-330 for the Double Wall Insulated Cable. I think that if you do the math, you can use the GU100 thick wall plus the conduit for less money than using the Double Wall Insulated Cable.
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