NEC Wire Ampacity Calculator (Table 310.16)
Calculation Results
Required estimates based on your parameters:
Required Wire Gauge
#3 AWG
NEC 75°C Standard
Calculated Design Load
88.00 A
125% continuous load included
Derating Target
93.62 A
Adjusted for thermal limits
Recommended Breaker (OCPD)
100 A
Next standard size (NEC 240.6)
Min EMT Conduit Size
1-1/4 in
Based on 40% fill (NEC Ch.9)
Equipment Ground Size
#8 AWG
Copper ground (NEC Table 250.122)
⚠️ Safety Warning & Professional Sizing Notice: This tool provides planning and estimation calculations based on standard NEC or IEC guidelines. It does not replace a professional electrical plan, building permit, or direct inspection by a licensed electrician. Always consult a qualified professional before sizing circuits, installing wiring, or choosing overcurrent protection devices.
📋 Bill of Materials (BOM)
Estimated material quantities for the circuit run:
| Select | Material Item | Quantity | Notes & Specs |
|---|
💰 Project Cost Estimator
Estimated budget ranges based on current retail rates and copper indices:
DIY Materials Only
$0.00
Save on professional labor
Professional Installation
$0.00
Includes wiring labor & certification
| Material / Labor Category | Quantity | Estimated Cost Range | Source & Benchmark Info |
|---|
estimate · source · not a quote · Methodology details
📁 Save My Project
Save this project calculation to your browser's local storage to load or edit later:
Sources & Governing Codes
- NFPA 70 National Electrical Code (NEC): NFPA 70 National Electrical Code (NEC) View Standard
- OSHA Standard 1910.303 General Electrical Safety: OSHA Standard 1910.303 General Electrical Safety View Standard
- ADA 2010 Standards Section 308 Reach Ranges: ADA 2010 Standards Section 308 Reach Ranges View Standard