No longer switch between multiple tables: Choose the right wire for your custom allowable voltage drop while simultaneously taking into account ampacity, temperatures, and bundling. Click the orange button at the top of the screen to download the Excel sheet (safe: no macros / VBA code). See feature comparison table against other wire size calculators below.
Features
Example results when changing the allowed voltage drop from 1% to 10%:
Features
- AC/DC - 12/24/36/48/120V/... and any other custom system voltage
- custom maximum allowable voltage drop
- standards from either NEC (National Electrical Code) or ABYC (American Boat and Yacht Council)
- Conductor materials: Copper or Aluminum (NEW)
- wire insulation temperature ratings: 60/75/80/90/105/125/200C
- custom number of conductors in a bundle for derating
- custom ambient temperature for derating
- custom units: feet / meter and Celcius / Fahrenheit
- custom current
- custom circuit length based on either one-way distance or return-trip circuit length
- custom number of wires in parallel
- add connector electrical contact resistances for a custom number of connectors in the circuit
- each AWG size is vizualized with its own color for easy viewing
- download and use locally: no dependence on an internet connection
- Disclaimer: Use at your own risk.
- Will not run correctly in Google Sheets and OpenOffice.
- Feature requests or bugs: Let me know.
Example results when changing the allowed voltage drop from 1% to 10%:
