What type of insulation does UF cable have?

UF (Underground Feeder) cable is specifically designed for direct burial applications and is insulated with polyethylene. This insulation material is chosen for its durability, moisture resistance, and ability to withstand harsh environmental conditions. Polyethylene serves as an effective barrier against moisture, which is essential for cables that will be installed underground. This makes UF cable suitable for outdoor and underground installations where exposure to water and soil could pose risks to other insulation types.

When comparing it to other insulation materials, rubber may not provide the same level of moisture resistance needed for direct burial; PVC, while common for many electrical applications, may not offer the same durability and abrasion resistance as polyethylene in underground scenarios; and gel-filled insulation is typically used in specific telecommunications and specialty cable applications rather than for UF cables. Therefore, polyethylene is the most suitable and commonly used insulation material for UF cables.