125 Amp Wire Size Chart

The wire size calculator will give you a very simple and quick solution to the problem of calculating the size of wires and cables for pump applications in golf courses landscape projects and agriculture.

125 amp wire size chart. Electrical ac dc wire size for a 125a sub panel i am installing a 125a subpanel from my existing 200a subpanel. This website provides a wire size calculator voltage drop calculator wire ampacity charts and more. The wire size according to code has to be up sized to 125.

The requirements of the national electrical code nec and local codes must always be followed. For the 00 000 0000 etc. In the american wire gauge awg system wire size diameters can be calculated by applying the formula d awg 005 92 36 awg 39 inch.

Current is measured in amperes or amps. 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. Different types of wire are intended for different uses but with any of these wire types knowing the right wire size or gauge is key to making the right choice.

500mcm copper wire with an insulation factor of 75 and 90 degrees c is rated at 380 and 395 amps respectively. Awg wire sizes see chart below awg. 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. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor. 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.

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. I have a 70 run. How wires are sized.