Wire (AWG) Calculator6.1.0 - App Store

AWG Calculator
IMPORTANT NOTICE: THIS CALCULATOR IS *NOT* A GENERAL PURPOSE WIRE GUAGE CALCULATOR.

IT IS INTENDED SOLELY FOR FAA REGISTERED AIRCRAFT WIRING, LIMITED TO THE FOLLOWING APPROVED VOLTAGES: 14VDC, 28VDC, 115VAC AND 200VAC.
This app assists the aircraft airframe and powerplant (A&P) mechanic in determining the correct American Wire Gauge (AWG) wire size for given conditions, according to procedures outlined in FAA Publication AC 43-13 1B (Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair), Chapter 11. Conditions include circuit length, current, voltage, wire temperature (known or estimated) and derating factors for both altitude and wire bundle size/loading percentage.
The app also contains utilities that enable the aircraft mechanic to determine the following parameters without hands-on use of the AC 43-13 (when field/shop conditions make it impractical). Figures are referenced:
- Maximum Wire Length (standard temperature).
-- Input parameters: circuit voltage, current, current flow and AWG.
-- Output: L1.
-- Ref: AC 43-13 1B, Fig 11-2/3
- Maximum Current (standard temperature).
-- Input parameters: circuit voltage, current flow, wire length and AWG.
-- Output: Max Current.
-- Ref: AC 43-13 1B, Fig 11-2/3
- Altitude Deration Factor.
-- Input parameter: Max Altitude.
-- Output: Altitude Deration Factor.
-- Ref: AC 43-13 1B, Fig 11-5
- Bundle Deration Factor.
-- Input parameters: Wire Count and Loading Percentage
-- Output: Bundle Deration Factor.
-- Ref: AC 43-13 1B, Fig 11-5
- IMAX (elevated temperature).
-- Input parameters: ambient temperature, conductor temperature rating and AWG.
-- Output: IMAX.
-- Ref: AC 43-13 1B, Fig 11-4a/b
- Bundle Builder (NEW!)
-- Input parameters: number of wires, awg sizes, wire currents, maximum altitude, ambient temperature, wire rating, loading factor
-- Output: Bundle IMAX (derated for bundle and altitude) with table for IMAX per wire.
-- Ref: AC 43-13 1B, Fig 11-4a/b
When a input/output parameters exceed chart limits, data is extrapolated and an appropriate warning ("** extrapolated data") is shown.
Disclaimer

The user of AWG CALCULATOR for any specific application without an independent verification of its accuracy does so at his/her own risk and assumes any and all liability resulting from such use. No warranty is offered as to the accuracy of results. Users should have a thorough understanding of the relevant theoretical criteria.

Version History Fixed Share function to display on iPads 6.1.0 Jul 30 More expedient data entry in Bundle utility; cleared logic error in Utilities page 6.0.2 Jul 14 bug fix 6.0.1 Jul 13 * Major renovation to all layouts to better fit latest iPads and iPhones
* Internal keyboard inputs simplify data entry
* Clarified parameter meanings/definitions
* Rigorous error checking to validate inputs
* Added Share and Support menu items
* Fixed max altitude bug and set limit to 60,000 feet
* Reformatted Output page for clarity / printer friendly
* Allow decimal input values (formerly integer only)
* Simplified internet check availabity (rate/share/support) 6.0.0 Jul 9 Printing bug fixed; now able to print (if wifi printer is available) or use other various means (airdrop, email, notebook, copy/paste) to transfer output to permanent storage 5.2 09/29/2025 direct connection to app rate/review page in app store, expanded help file, tighter code 5.1 03/21/2025 New menus; print option for calculations output; help file 5.0 02/05/2025 added quick links to utilities; reduced decimal significant digits from 3 to 2 4.5 07/16/2024 Fixed menu bug. Added clarification as to the app's purpose. 4.4 03/29/2024 Icons are used in lieu of text menus. Fixed typos. Bug fixes. 4.3 01/04/2024 Bundle Builder, expanded User Guide, various bug fixes 4.2 04/21/2023 Added viewable/exportable User Guide in pdf format
Data remains unchanged across pages (long clicks will reset)
Feet/Meters option for input of wire length with 0.5 unit increments
Outputs are contained in single scrollable frame with optimized font sizes
Recalibrated equations (tighter solutions)
Opened AWG 24 solutions
Added voltage drop warning where needed
Fixed bugs 4.0 04/01/2023 Rate the App option added 3.1 02/06/2023 Added Push Notifications 3.0 01/29/2023 Bug Fix 2.0.1 08/27/2022 Reformatted displays to fit all current iPhone/iPad devices as well as M1 chipped Macs. Eliminated landscape views. 2.0.0 08/25/2022 Recompiled to run on M1 chipped Macs 1.0.3 08/21/2022 Update HELP file v2 04/02/2021 1.0 08/26/2020