FIG. 00 — IN PROGRESS
WIRE RESISTANCE CALCULATOR
Calculate DC resistance for any copper or aluminum conductor at any length. Inputs gauge, material, length; outputs ohms total. Pairs with the voltage drop calculator for full feeder analysis.
⚠ STATUS · TOOL UNDER FINAL VALIDATION
We're finalizing this calculator's NEC validation. In the meantime, use the voltage drop and the wire fill chart on the homepage.
FIG. 01
WHAT THIS TOOL WILL CALCULATE
- 01Input: wire gauge (14 AWG – 1000 kcmil), material (copper / aluminum), length in feet
- 02Output: total DC resistance in ohms, resistance per 1000 ft (cross-checked against NFPA 70 Table 8)
- 03Temperature correction option for non-75°C ambient (NEC Table 9 approach)
- 04Pairs with the voltage drop calculator — provides the R input for V = IR × 2× length