Uf B Wire Ampacity

U nderground f eeder and b ranch circuit wiring cable applications.

Uf b wire ampacity.

What does ufb mean. It can also be used for outbuildings such as garages and barns. Southwire s copper uf b cable is used in applications that include outside lamp posts pumps and other loads. Underground feeder building wire assortment 112 69 1 13 ft 112 69 1 13 ft free delivery.

Category 5e cable view pdf. Table 310 15 b 3 a adjustment factors for more than three current carrying conductors in a raceway or cable. View the southwire company 100 ft. You must use the correct size wire for the current load requirement of the circuit to prevent the wire from overheating.

Usually a general purpose house circuit is designed for 20. Ampacities per national electrical code section 310 15 and 334 80 2011 edition note. Burglar alarm cable view pdf. The equipment temperature limitation default values as described in nec 110 14 c 1.

Access control cable view pdf. Color code for 4 conductor cable is black white red and blue. Copper tffn tfn tewn view pdf. Jacket thickness for all nm b cable is 30 mils color code for 2 2 conductor cable is black white red and white with red stripe.

Current is measured in amperes or amps. The cable can also be used as direct burial cable. Or the cable type temperature limitation. Copper rhh rhw 2 use 2 view pdf.

Copper uf b view pdf. Uf b feeds from a distribution point in an existing building. The app limits the final ampacity of the wire to the most conservative of. 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.

Uf b wire s formal name refers to its uses. Nm b is permitted to be. Allowable ampacities of insulated conductors rated 0 2000 volts as excerpted from the 2002 national electrical code ampacities of not more than three current carrying conductors in raceway cable or earth. A 2 500 b 1 000 c 500 d 125 e 250 f 500.

Uf b has a heat capacity of 90 c and is rated at 600 volt. Where the number of current carrying conductors in a raceway or cable exceeds 3 the allowable ampacities shall be reduced per the table below. The corrected and adjusted ampacity. Set your store to see local availability add to cart.

The calculator will permit choosing nm b and uf b up to 2 awg. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor.