WIRE GAUGE CALCULATOR
// FREE WIRE GAUGE CALCULATOR // AWG SIZING // NEC COMPLIANT //
*Al is ~30-40% cost of Cu, but requires upsizing.
Standard Breaker Sizes (Amps)
*Always size breaker to protect the weakest link.
| Size (EMT) | #12 THHN | #10 THHN |
|---|---|---|
| 1/2" | 9 | 5 |
| 3/4" | 16 | 10 |
| 1" | 26 | 16 |
NEC 310.15(B)(16): Allowable Ampacities of Insulated Conductors.
NEC 240.4(D): Small Conductor Protection (14AWG=15A, 12AWG=20A, 10AWG=30A).
- Garage Subpanel60A / 240V / 25m
- Kitchen Island20A / 120V / 12m
- AC Unit30A / 240V / 5m
Calculations align with NEC 310-16 standards for maximum safety.
Auto-correction for Copper vs Aluminum resistivity profiles.
Immediate alerts when voltage drop exceeds the critical 3% threshold.
Verifies load against maximum allowable ampacity per gauge.
HOW_TO_USE
// CALCULATE WIRE GAUGE IN THREE STEPS //
1. INPUT_SPECS
Enter voltage, current, distance, and material. Or select a quick scenario.
2. INSTANT_CALC
Results update in real-time. No button clicking needed.
3. GET_RESULT
Receive NEC-compliant AWG size with voltage drop analysis.
ABOUT_SYSTEM
// COMPREHENSIVE WIRE SIZING TOOL //
This wire gauge calculator helps electricians, engineers, and DIY enthusiasts determine the correct AWG wire size for any electrical application. Enter your voltage, current, distance, and conductor material — the wire gauge calculator returns a NEC-compliant recommendation with voltage drop analysis in real time.
Whether you're installing an EV charger, running a subpanel to your garage, or wiring a new kitchen circuit, this free wire gauge calculator ensures your wire sizing is safe and code-compliant.
DISTRIBUTE_TOOL
Help others calculate the correct wire gauge. Share this free tool with colleagues and friends.