Wire Size Calculator
Calculate the correct wire gauge (AWG) for electrical installations based on current, distance, and voltage drop requirements.
Wire Sizing Parameters
NEC recommends 3% for branch circuits, 5% total
Recommended Wire Size
12 AWG
Copper • Single Phase
Voltage Drop Analysis
Actual Voltage Drop3.18 V (2.65%)
Wire Resistance0.1588 ohms
Power Loss in Wire63.52 W (2.65%)
Ampacity Check
Wire Ampacity20 A
Load Current20 A
Safety Margin0.0%
Wire Details
Required Circular Mils5761
Selected Wire Circular Mils6530
Total Wire Length100 ft