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Electrical Calculators
Wire gauge, circuit load, conduit fill, and outlet spacing calculators.
Electrical sizing must follow NEC Table 310.15(B)(16) ampacity ratings and the 3% voltage drop rule for branch circuits. These calculators give you the minimum AWG wire gauge for your load and run length, flagging when you need to upsize for voltage drop.
Wire Gauge Calculator
ElectricalFind the correct wire gauge (AWG) for any circuit based on amperage, run length, and voltage. Checks NEC ampacity and 3% voltage drop.
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Conduit Fill Calculator
ElectricalCalculate conduit fill percentage to ensure NEC compliance. Checks 40% fill limit for 3+ conductors.
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