2 Stranded Copper Wire Ampacity Chart

Usually a general purpose house circuit is designed for 20.

2 stranded copper wire ampacity chart. For 60 degree wiring inside romex. This is a handy rule to remember when making rough wire size estimations. If you are running more than 100a you probably will run aluminum and need a different table. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor.

120 240 volt 3 wire single phase service entrance conductors service. Copper aluminum awg service or feeder or kcmil kcmil rating amperes 4 2 100. The following chart is a guideline of ampacity or copper wire current carrying capacity following the handbook of electronic tables and formulas for american wire gauge. Current is measured in amperes or amps.

Do not use copper ratings for aluminum. Formerly table 310 16 allowable ampacities of insulated copper 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 temperature of 30 c 86 f. Usually a general purpose house circuit is designed for 20 amps. This amp chart highlights the types of cords gauge size range number of cord coductors ampacity of current carrying conductors and much more.

Amp chart lead wire current carrying capacity ampacity awg size insulated conductor temperature rating awg size at 80 c at 90 c at 105 c at 125 c at 150 c at 200 c 40 0 33 0 49 0 55 0 60 0 71 0 78 40 38 0 47 0 68 0 77. The ampacity chart below shows the allowable ampacities of single insulated electrical wire rated up to and including 2000 volts in free air based on ambient air temperature of 30 c 86 f. Use the stayonline wire ampacity chart to look up the rated amperage of different sizes and types of cords. Must use the correct size wire for the amperage requirement of the circuit to prevent the wire from over heating.

Allowable ampacities of conductors in free air. Lighting circuits may be designed for only 15. For every three steps in the gauge scale wire area and weight per unit length approximately doubles. You must use the correct size wire for the current load requirement of the circuit to prevent the wire from overheating.

Awg copper wire table size and data chart 100 degrees f. The number and type of electrical devices connected to a circuit determine the amperage requirement of the circuit. Minimum copper wire gage 15a 14awg 20a 12awg 30a 10awg 40a 45a 8awg 55a 60 6awg 70a 80 4awg 95a 100 2awg alternate marked is not to nec code.