The Hidden Backbone of Every Hi-Tensile Fence System — Built Tough, Buried Deep A great electric fence starts underground. The 100' Thick Wall Underground Cable is the insulated wire that connects your energizer to your fence, carries current under gateways, and ties your grounding system together — all without losing voltage or breaking down over time. Powerflex recommends this cable for lead-out wires, jumpers, under-gateway runs, and grounding connections in every hi-tensile fence build. Built with UV-stabilized MDPE (Medium Density Polyethylene) double-wall insulation around a Class III coated soft wire core, this cable is engineered to handle the moisture, soil pressure, and temperature swings that destroy lesser wire. The thick double-wall jacket keeps current in and corrosion out — year after year, buried or exposed. Features Thick Double-Wall InsulationTwo layers of protection keep current contained and prevent moisture intrusion — far more durable than single-wall alternatives. UV-Stabilized MDPE JacketResists UV degradation for above-ground runs and handles soil pressure and moisture for buried applications. Class III Coated Wire CoreThe inner wire is Class III galvanized — the highest level of corrosion protection available for fence wire. Ideal for Gateway CrossingsRun under gates without voltage loss or insulation failure — the standard solution for clean, reliable gateway connections. Lead-Out Wires & JumpersThe go-to cable for connecting your energizer to the fence and jumping between strands in a multi-wire system. Grounding System ConnectionsUse to connect ground rods and complete your grounding circuit for maximum energizer performance. Specifications Length: 100 feet Insulation: Thick double-wall UV-stabilized MDPE Wire Core: Class III coated soft wire (0.99") 12 ½ gauge class 3 galvanized Application: Lead-out wires, jumpers, gateway crossings, grounding connections Every great fence has great connections — the 100' Thick Wall Underground Cable is the reliable foundation your hi-tensile system depends on.