Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Nec Voltage Drop: aluminum
6 AWG to 900 kcmil
NEC Chapter 9 Table 8 wire resistance and reactance data — DC resistance, AC resistance, and reactance for copper and aluminum conductors in PVC and steel conduit
| conductor material | conductor size | ac reactance ohm per kft pvc (ohm/kft) | ac reactance ohm per kft steel (ohm/kft) | ac resistance ohm per kft pvc (ohm/kft) | ac resistance ohm per kft steel (ohm/kft) | area cmil (cmil) | dc resistance ohm per kft uncoated (ohm/kft) | nec table | standard | stranding |
|---|---|---|---|---|---|---|---|---|---|---|
| aluminum | 6 AWG | 0.051 | 0.064 | 0.81 | 0.81 | 26,240 | 0.808 | chapter9 table8 | NEC Chapter 9 Table 8 | 7 |
| aluminum | 600 kcmil | 0.039 | 0.048 | 0.036 | 0.038 | 600,000 | 0.0353 | chapter9 table8 | NEC Chapter 9 Table 8 | 61 |
| aluminum | 700 kcmil | — | — | — | — | 700,000 | 0.0303 | chapter9 table8 | NEC Chapter 9 Table 8 | 61 |
| aluminum | 750 kcmil | 0.038 | 0.048 | 0.029 | 0.031 | 750,000 | 0.0282 | chapter9 table8 | NEC Chapter 9 Table 8 | 61 |
| aluminum | 8 AWG | 0.052 | 0.065 | 1.3 | 1.3 | 16,510 | 1.26 | chapter9 table8 | NEC Chapter 9 Table 8 | solid |
| aluminum | 800 kcmil | — | — | — | — | 800,000 | 0.0265 | chapter9 table8 | NEC Chapter 9 Table 8 | 61 |
| aluminum | 900 kcmil | — | — | — | — | 900,000 | 0.0235 | chapter9 table8 | NEC Chapter 9 Table 8 | 61 |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators