220 Volt Wire Size Calculator
Preset to 220 V. Adjust load, run length, drop %, and material.
How to Use This Calculator
Use for 220 V single-phase approximations. Enter load current, one-way length, allowable drop %, and material. Adjust voltage if using 230/240 V systems.
Formula
Vdrop = I · R = I · (ρ · 2L / A)
A ≥ ρ · 2L · I / Vdrop,allow
Frequently Asked Questions
Is this for three-phase?
This page uses a DC/single-phase approximation. For three-phase circuits, use a dedicated three-phase calculator.