Type uf b underground feeder and branch circuit cable is generally used in underground direct burial installations as branch circuits and or feeders to outside floodlights sewer pumps and motors electric gates and other loads typically supplied from a distribution system.
Type uf cable sizes.
Will list the type of cable such as nm b or uf.
It contains a solid strand.
This number follows gauge.
The national electrical code nec recommends a maximum voltage drop of 3 percent for individual household circuits known as branch circuits this is a good goal to shoot for when sizing the conductors for an underground cable the following are the maximum lengths of cable you can use while still maintaining a 3 percent voltage drop for the given wire size awg and.
It has a durable nylon jacket that resists abrasion moisture and corrosion.
The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f.
Sizing the conductors.
That s more critical than the number of strands.
For example a 12 gauge wire with a hot and a neutral black and white wire and a ground would be considered a 12 2 uf wire cable.
It contains seven strands.
Billy check the sec cable size table in se cable sizes vs amps for 200a and 150 ft and select a uf or underground feeder rated cable type.
Uf b underground feeder cable is electrical wire that can be buried directly in the ground with or without conduit.
Uf b is typically used as a replacement for nmc.
The weight per 1 000.
That s more critical than the number of strands.
Type uf b underground feeder cable has a broad range of usage as defined in article 340 of the national electrical code nec.
Wiring buried inside rigid metal rmc or intermediate metal imc conduit must have at least 6 inches of earth cover.
All the information you need to know about a type of cable is printed on its sheathing.
Both type uf and type uf b cables are available in different common wire sizes also known as gauges and common wire counts.
Type uf b may be installed as interior wiring in wet dry or corrosive locations at temperatures not to exceed 90 c with ampacity limited to that for 60 c conductors as specified by the nec.
Wiring in pvc conduit must have at least.
Uf b 8 2 this cable is 8 awg and it also has 2 conductors.
It is typically used as a feeder or branch circuit cable to extend electrical service underground from a main building to a secondary facility.
Uf cable can be direct buried without conduit with a minimum of 24 inches of earth cover.
It has a ground wire size of 10 bearing the weight of 222 pounds per 1 000 feet.
Uf b 6 2 this type is 6 awg with 2 conductors.
