3 Conductor Cable Ampacity

Over 15 2 m soow service oil resistant insulation jacket weather resistant 18 awg.

3 conductor cable ampacity.

Current is measured in amperes or amps. 0 50 ft. 60 c 140 f. Where the number of current carrying conductors in a raceway or cable exceeds three or where single conductors or multiconductor cables are stacked or bundled longer than 600 mm without maintaining spacing and are not installed in raceways the allowable ampacity of each conductor shall be reduced as shown in table 3 10 1 15 b 2 a.

2 3 or 4 3 or. Wire ampacity tables ampacities of insulated conductors from nec table 310 16 not more than three conductors in raceway or cable or earth directly buried based on ambient temperature of 30 c 86 f size. Where the number of current carrying conductors in a raceway or cable exceeds 3 the allowable ampacities shall be reduced per the table below. Table 310 15 b 3 a adjustment factors for more than three current carrying conductors in a raceway or cable.

Usually a general purpose house circuit is designed for 20. Aluminum conductors copper clad conductors. 7 amps 5 6 amps. For example 3 0 awg copper has an ampacity of 200 amps at 75 while 3 0 awg aluminum has an ampacity of 155 amps at 75.

Cord conductors number of current carrying conductors 1 ampacity of current carrying conductors amperes voltage rating of cord. For dwelling units conductors as listed below shall be permitted as 120 240 volt 3 wire single phase service entrance conductors service lateral conductors and feeder conductors that serve as the main power feeder to a dwelling unit and are installed in raceway or cable with or without an equipment grounding conductor. 0 15 2 m over 50 ft. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor.

2 3 or 4 3 or 4. 10 amps 7 amps. You must use the correct size wire for the current load requirement of the circuit to prevent the wire from overheating.