Conduit Fill Calculator
Calculate conduit fill percentage and verify NEC code compliance for wire installations.
How to Use the Conduit Fill Calculator
- Enter the conduit inner cross-section area in mm².
- Enter individual wire cross-section area in mm².
- Enter the number of wires.
- Review fill percentage and NEC compliance status.
使用场景
- •Electrical conduit sizing
- •NEC code compliance checks
- •Commercial wiring design
公式
Fill% = (N × Wire Area / Conduit Area) × 100
常见问题
How accurate is this calculator?
Results are based on standard engineering formulas and are suitable for preliminary estimates.
What units are used?
SI units (metres, kg, kPa) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.