Wire Size Calculator
Find a recommended AWG conductor size from load current, voltage drop limit, distance, phase, insulation, material and installation method.
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Your explanation appears here
This browser tool is a sizing estimate. Final conductor size depends on code rules, terminal ratings, derating, breaker size and local authority requirements.
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Test a longer run or different voltage-drop limit without changing the main inputs.
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It tests standard AWG/kcmil sizes from small to large and selects the first conductor that passes both ampacity and the selected voltage drop limit using the entered material, phase, voltage and one-way distance.
3% is a common design target for branch circuits, while 1–2% is stricter and may require larger conductors on long runs. A 5% limit is more relaxed and should be checked against your complete feeder-plus-branch design.
No. Use this as a planning estimate only. Real installations may need temperature correction, conduit-fill derating, equipment grounding conductor sizing, breaker coordination, terminal temperature limits and inspection by a licensed professional.
Results are estimates generated locally in your browser from standard conductor ampacity and voltage-drop formulas. They are for informational planning only, not a substitute for NEC/CEC/local code review, engineering design, permitting, inspection or a licensed electrician. VisionVix accepts no liability for decisions based on this output.
