UF-B cable is generally used as feeder to outside post lamps,pumps, and other loads or apparatus fed from a distribution point in an existing
building as specified in the 2011 National Electrical Code. UF-B cable may be used underground, including direct burial. Multiple conductor UF-B cable may be used for interior branch circuit wiring in residential or agricultural buildings at conductor temperatures not to exceed 90°C (with ampacity limited to that for 60°C conductors) as specified by the National Electrical Code. UF-B can be used in applications permitted for NMC in Section 334.10(B) of the National Electrical Code. Voltage rating for UF-B cable is 600 volts.
ASTM - B3 and B-8
UL Standard 83
UL Standard 493
Federal Specification A-A-59544
National Electrical Code, NFPA 70.
CONDUCTOR | JACKET THICKNESS (MILS) | GROUND WIRE | CABLE DIMENSION (MILS) | NET WEITHT /1000’ (LBS) | ALLOWABLE AMPACITY | |||
SIZE (AWG) | STRAND NOS | INSULATION & NYLON JACKET (MILS) | SIZE | STRAND NOS | ||||
TWO CONDUCTORS | ||||||||
14 | 1 | 19 | 30 | 14 | 1 | 423*168 | 70 | 15 |
12 | 1 | 19 | 30 | 12 | 1 | 463*183 | 95 | 20 |
12 | 1 | 19 | 30 | WITHOUT GROUND | 386*183 | 70 | 20 | |
10 | 1 | 24 | 30 | 10 | 1 | 518*215 | 138 | 30 |
8 | 7 | 35 | 45 | 10 | 1 | 678*302 | 222 | 40 |
6 | 7 | 35 | 45 | 10 | 1 | 770*338 | 303 | 55 |
THREE CONDUCTORS | ||||||||
14 | 1 | 19 | 30 | 14 | 1 | 581*168 | 95 | 15 |
12 | 1 | 19 | 30 | 12 | 1 | 626*183 | 129 | 20 |
12 | 1 | 19 | 30 | WITHOUT GROUND | 581*183 | 107 | 20 | |
10 | 1 | 24 | 30 | 10 | 1 | 727*215 | 191 | 30 |
8 | 7 | 35 | 45 | 10 | 1 | 1059*319 | 344 | 40 |
6 | 7 | 35 | 45 | 10 | 1 | 1223*361 | 478 | 55 |