120 Volt Wire Size Chart

Basic wire sizing guide for us 120 and 240 volts.

120 volt wire size chart. 1 phase kva volts x amps 1000 1 phase amps kva volts x 1000 3 phase kva volts x amps x 1 732 1000 3 phase amps kva volts 1 732 x 1000. In american wire gauge every 6 gauge decrease gives a doubling of the wire diameter and every 3 gauge decrease doubles the wire cross sectional area. Don t worry calculating the wire size is made easy with the wire size guides below. 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.

To avoid excessive voltage drop select a size wire that will minimize voltage drop. The wire sizing guide below provides the minimum wire size needed to limit voltage drops to 5 at a given distance in a 12v or 24v system. Service cable is large insulated stranded copper cable usually refers to single 4 wire and up. The dashes represent currents which cannot be handled by the.

For a 48v system multiply the distance taken from the 24v chart by 2. The calculator allows entry of a voltage drop but caution should be used when doing so to make sure you are calculating the wire sizes in accordance with nec article 210 19 fpn no. Wire is sized by the american wire gauge awg system. Common sizes include 14 12 10 8 6 and 2 gauge wire.

American wire gauge awg the lower the number the larger the wire guage. Wire gauge refers the physical size of the wire rated with a numerical designation that runs opposite to the diameter of the conductors in other words the smaller the wire gauge number the larger the wire diameter. Now you can take the advantage of this calculator to do this job j you can also check the classical wire cable size calculator in awg calculating wire cable size formula for single phase circuits. Wire size by.

If you want to limit your losses to 2 simply divide the distance by 2 5. Today we are here with another comprehensive copper and aluminum wire size calculator as we have discussed in detail the topic of how to calculate the proper wire size for electrical wiring. 4 the nec allows a maximum of a 3 voltage drop on the main branch of a circuit at the farthest outlet of power and 5 total to both feeders and branch circuits to the farthest outlet. Larger wire sizes those with a greater diameter will have less voltage drop than smaller wire sizes of the same length.

You need to know the length of the wire run and the load current that will be on the circuit. Formulas used in calculator. The size of wire required for a given task depends on the voltage being used the amount of amps required and also the distance that power is being transmitted.