Wire Pulling Tension Calculator
Use this wire pulling tension workflow for a quick screening estimate from conductor count, conductor weight, pull length, friction, starting tension, and bend radius.
Open calculatorWire, Raceway And Ampacity
Wire sizing, ampacity, derating, conduit fill, and raceway checks.
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Parallel Conductor Calculator
Use this parallel conductor workflow for early current-sharing screening when load, number of sets, ampacity, and mismatch allowance are already known.
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Conductor Resistance Temperature Calculator
Use this resistance-temperature workflow when you already know the conductor resistance basis and coefficient. It does not identify conductor material or select wire size.
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Conduit Body Fill Calculator
Use this conduit body fill workflow when conductor area and manufacturer or verified capacity are already known. It does not reproduce conduit-body tables.
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Cable Bend Radius Calculator
Use this cable bend radius workflow when the manufacturer or project bend-radius multiplier is known and you need a quick radius estimate.
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AWG Wire Resistance Calculator
Use this AWG wire resistance workflow when you need a transparent resistance estimate from AWG size, conductor material, temperature, length, and conductor count.
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Voltage Drop Calculator
Use this direct voltage-drop workflow when you already know the conductor resistance basis. It estimates drop and margin against the entered limit but does not select a conductor or verify code compliance.
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Wire Size Calculator
Enter the load current, one-way length, system voltage, allowable voltage-drop percentage, and conductor resistance per 1000 ft to estimate circuit voltage drop. The result is a preliminary engineering estimate and does not select an AWG/kcmil size or NEC wire size.
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Wire Derating Calculator
Enter a base ampacity and transparent user-supplied decimal multipliers for ambient temperature and bundling to estimate adjusted ampacity. Conductor count is a review flag only and does not automatically select a bundling factor. This calculator does not select or reproduce source tables.
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Ampacity Calculator
Use a reviewed base ampacity estimate associated with a conductor size, gauge, or cross-sectional area label, then apply explicit user-supplied decimal factors. Conductor count is a review flag only and does not automatically select an adjustment factor. This preliminary estimate makes no NEC table claim.
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Conduit Fill Calculator
Enter the raceway internal area, the cross-sectional area of one conductor, and the conductor count to estimate occupied area and fill ratio in square inches.
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