Is UF wire direct burial?
UF-B cable is typically used as an underground feeder cable to distribute power from an existing building to outdoor lighting fixtures, pumps, outbuildings and other outdoor equipment. The cable can also be used as direct burial cable.
How deep does UF wire have to be buried?
Bury in the Ground: Dig 24 inches -deep, run direct-bury UF-B wire cable. There’s one restriction: It needs a conduit where the cable is exposed on the outside of the house and to 18 inches below the ground.
Can UF wire be buried without conduit?
UF cable can be direct buried (without conduit) with a minimum of 24 inches of cover. Wiring buried inside rigid metal (RMC) or intermediate metal (IMC) conduit must have at least 6 inches of ground cover; wiring in PVC conduit must have at least 18 inches of cover.
Can UF type of cable be permitted to be used for direct burial applications?
Type UF cable shall be permitted as follows: (1) For use underground, including direct burial in the earth. For underground requirements, see 300.5. (2) As single-conductor cables.
What does UF wire stand for?
”UF” stands for underground feeder; rated for in-ground and damp-area installation. Looks like NM-B cable but the wires are embedded as a group in solid thermoplastic (rather than individually encased in flexible thermoplastic).
Can UF wire be exposed?
The use of UF cable on the exterior surface of buildings or structures is permitted by Sec. If the cable is exposed to physical damage it must be protected in accordance with Sec. 225.20 and the requirements for service cables in Sec.
Can UF wire be exposed outdoors?
Exposed or buried wiring/cable must be listed for its application. Type UF cable is the most commonly used nonmetallic cable for residential outdoor wiring runs. UF cable can be direct-buried (without conduit) with a minimum of 24 inches of earth cover.
What does direct burial wire mean?
Direct Burial rated wire is approved to be run in the earth in accordance with the National Electric Code (NEC), usually without the use of conduit to surround it. The combination of the insulation material and its thickness keeps out moisture and other harsh factors to protect the wires inside.
Can direct burial wire be put in conduit?
Direct-burial cable can be run inside the conduit to add additional protection to any electrical system. This type of cable is designed to withstand direct exposure to the soil and moisture and is rated for wet, dry, and damp environments.
Can UF wire be exposed outside?
The use of UF cable on the exterior surface of buildings or structures is permitted by Sec. If the cable is exposed to physical damage it must be protected in accordance with Sec. 225.20 and the requirements for service cables in Sec. 230.50(B)(1).
What size direct burial cable to use?
The NEC recommends several types of cable for direct bury. However, the most common in this application will be type UF (underground feeder). This is typically a grey-colored cable that is sold in hardware stores in spools or coils. Common lengths are 25 feet, 50 feet, and 100 feet.
What is direct burial cable?
Direct-burial cable is a special type of electrical wiring, or cable, that is designed to be buried in a trench underground . The individual electrical conducting wires inside the cable are encased in a solid thermoplastic sheath that seals out moisture and protects the conducting wires within. Oct 27 2019
What is direct bury cable?
Direct-buried cable ( DBC) is a kind of communications or transmissions electrical cable which is especially designed to be buried under the ground without any kind of extra covering, sheathing, or piping to protect it. Most direct-buried cable is built to specific tolerances to heat, moisture, conductivity, and soil acidity.
What is UF electrical wire?
uf wire. A uf wire is a type of insulated electrical wiring rated for underground use. See the following for additional uf wire information: Outdoor Electrical Safety Check – Tips For The Safe Outdoor Use Of Electricity United States Federal Citizen Information Center, December 2009, Editorial Staff.