What type of wire is commonly used for direct-burial applications?

Type UF (Underground Feeder) wire is the correct choice for direct-burial applications due to its construction and environmental resilience. This type of wire is specifically designed for underground usage, featuring a moisture-resistant jacket that protects it from water exposure and soil conditions. It can safely operate without additional conduit, which is a requirement for many outdoor electrical installations where it must be buried directly in the ground.

Type MC (Metal Clad) wire is suitable for areas where the wire may be exposed to physical damage or moisture, but it typically requires additional protection when buried directly in the ground. Type NM (Non-Metallic Sheathed) wire is intended for dry, indoor installations and does not have the robustness needed for direct burial. Type SE (Service Entrance) wire is designed for overhead service entrances and is not intended for direct-burial applications either.

Therefore, Type UF wire's specific design for moisture resistance and direct-burial makes it the appropriate choice for this application.