UF is a single or multi-conductor cable, with or without a ground, used for direct burial as underground feeders and branch circuits between buildings, to yard lights, floodlights, and similar installations.
UF, short for underground feeder, is a building cable rated for direct burial in the earth without conduit. It is made as a single or multi-conductor cable, with or without a grounding conductor, in a moisture- and sunlight-resistant construction that lets it be buried directly. UF is used for underground feeders and branch circuits running between buildings and out to yard lights, floodlights, and similar outdoor installations.
Because it is buried directly in the ground, UF cable has a tough, moisture-resistant jacket that protects the conductors from dampness and physical contact with the soil. This construction distinguishes it from interior building wire and lets it carry power along underground runs reliably.
In commercial and industrial settings, UF cable carries power underground between structures and to outdoor lighting and equipment. Recognizing the designation helps in selecting cable rated for direct burial.
Because it is buried directly in the ground, UF cable has a tough, moisture-resistant jacket that protects the conductors from dampness and physical contact with the soil, a construction that distinguishes it from interior building wire and lets it carry power along underground runs reliably.
At Windy City Wire, an understanding of building cable designations, including UF, supports clear communication about power cable. Recognizing how UF's direct-burial construction suits it to underground feeders and outdoor circuits helps customers interpret references when specifying cable for commercial and industrial installations.
UF (underground feeder)
NEC (National Electrical Code), which defines Type UF cable