#Wire size for 60 amp 100 feet full size#

Visit the Terms of Use and Privacy Policy for this site. Visit the Tables page to view reference tables such as Maximum Ampacity for Current-Carrying Conductors. To calculate wire ampacity for a circuit, use the Wire Ampacity Calculator or the Advanced Wire Ampacity Calculator.įor long conductor runs where voltage drop may be an issue, use the Voltage Drop Calculator to determine proper conductor sizing and maximumĬircuit length. To calculate wire size for a circuit, use the Wire Size Calculator or the Advanced Wire Size Calculator. This calculator is based on information found in this reference guide, and can help electricians troubleshoot maintenance and control circuits. Breaker size should generally be 125% of FLA of motor.Ī good field reference for maintenance and troubleshooting is Ugly's Electric Motor and Controls ( Ugly's Electric Motors And Controls, 2014 Edition ). Note: Always refer to NEC when sizing conduit. However, when adding or servicing a 100 Amp wire(s), it is highly recommended to consult and even hire a certified electrician who is aware of local standards and laws regarding electric wiring. So, if You need to know the solid copper wire thickness for 100 Amps service/sub-panel, then: When calculating the wire thickness of the long wires, always use values from the 60☌/140☏ column, since the 'wire length' rule, especially after calculating the '80% Rule' is all about energy losses and not wire surface temperature - as long as the wires are properly installed.

Now, we have to check the required AWG value for given wire lengths, depending on the wire surface temperature - values are given in the following chart: Wire Length / Surface feet (125 Amps) There are several rules and standards that may be used when calculating the required wire thickness, but the general rule of thumb is to increase the required Ampacity by 10% for every 50 feet (~15 m) of the wire length - some standards increase Ampacity by 20% for every 100 feet (~30 m) which provides the same or very similar results.įor example, when calculating the required Ampacity for the 50 feet, 100 feet, 150 feet, and 200 feet wires, we can use (default value is 125 Amp, after applying the '80% Rule'):ĥ0 feet wire: Ampacity = 125 Amps * 1.1 = 137.5 Ampsġ00 feet wire: Ampacity = 125 Amps * 1.2 = 150 Ampsġ50 feet wire: Ampacity = 125 Amps * 1.3 = 162.5 AmpsĢ00 feet wire: Ampacity = 125 Amps * 1.4 = 175 Amps This wire size calculator will calculate the appropriate wire gauge for a circuit based on amps, voltage, distance, and load.

#Wire size for 60 amp 100 feet full size#

Our over-the-range microwave is a full size residential appliance at 1.6 cubic. 90☌/194☏: 2 gauge wire (AWG 2) features an Ampacity of 130A.Īnd these values are for relatively short wires, usually less than 50 feet (less than ~15 meters), which raises the question about the wire thickness of longer wires. 3 x 100 Amp Hour Lithium Iron Phosphate batteries 60 AMP Charge Controller. To connect a 60A breaker at more than 100 ft, a 3 AWG wire may be substituted for a 4 AWG wire. 75☌/167☏: 1 gauge wire (AWG 1) features an Ampacity of 130A, What Size Wire Do I Need To Run 60 Amps 100 Feet As a rule of thumb, a 60-amp cable with 100 ft length will experience a 20 voltage drop. 60☌/140☏: 0 gauge wire (AWG 0) features an Ampacity of 125A, Thus, for 100 Amp service, the required wire thickness is:

Hence, we should not look for wires being able to carry 100 Amps, but 125 Amps: The 80% Safety RuleĨ0% Rule states that actual wire current should be at most 80% of its default Ampacity. so for example could use a popular 2-2-2-4 URD Aluminum direct burial wire, but would only use a 60 amp breaker for that distance, 80 amp if needed but could experience some voltage drop at high. 90☌/194☏: 3 gauge wire (AWG 3) features an Ampacity of 115A.īut, these wire thicknesses are not recommended for actual use since wires should never carry current that equals their default values for safety reasons - hence the 80% Rule. So if not really needing full 100 amp load, can go down smaller wires sizes, but use smaller breaker to meet the maximum amperage rating for that wire. 75☌/167☏: 3 gauge wire (AWG 3) features an Ampacity of 100A, For 60 ampere breakers, electricians and professionals suggest using a wire size gauge ranging from 6 AWG to 4 AWG. 60☌/140☏: 1 gauge wire (AWG 1) features an Ampacity of 115A, Note: Ampacities are given for enclosed wires ambient temperatures.Īs one can see, the Ampacity of wires is given at three different temperatures (60☌/140☏, 75☌/167☏, and 90☌/194☏), but for most residential installations, 60☌/140☏ is the maximum allowed wire surface temperature.Īlso, if the value is not given for a required current, one has to look for a wire with a larger Ampacity.įor example, if we are going to look for 100 Amp wire size using default Ampacities for solid copper wire, then: