Electric Service Wire Size Calculator

This should be used as a reference only.

Electric service wire size calculator.

40 x 1 25 14 3 50 14 3 67 amps. The calculations are fairly complex so most electricians use a convenient calculator tool to properly size the main electrical service. Construction monkey calculator that determines an electrical feeder based on load size as well as other variables. 100 amp service provides enough power for a small home without electric heating.

This wire size calculator will calculate the appropriate wire gauge for a circuit based on amps voltage distance and load. The national electrical codes are the basis of making sure. Detailed instructions for the electrical load calculator. The purpose of the residential electrical load calculation is to accurately determine the size of the electrical service base upon the electrical equipment that will be installed.

Common sizes include 14 12 10 8 6 and 2 gauge wire. 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. There are many factors to consider before choosing the proper gauge. 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.

Please don t use this calculator for short service runs. Wire is sized by the american wire gauge awg system. This website provides a wire size calculator voltage drop calculator wire ampacity charts and more. When sizing conductors calculations limits wire size to voltage drop and nec ampacity.

Allowable voltage drop 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. 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. Southwire s voltage drop calculator is designed for applications using awg and kcmil sizes only. Please check with your electrical inspector or a licensed electrician for the proper wire size.

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. The figure we would plug into the calculator would be. It also calculates the voltage drop and maximum distances of the feeders. Nfpa 70 national electrical code table 310 15 b 16 17.