NG Wire: NEC Ampacity & Fill
Grounding Size, Motor, & Cover
Free · In‑App Purchases
NG Wire™ is a professional NEC® reference and calculation app for electrical engineers, electricians, designers, inspectors, and contractors. Quickly look up ampacity, grounding conductor sizes, minimum cover requirements, motor data, and perform conduit fill calculations.
Designed for speed, NG Wire™ delivers the information you need with just a few taps, eliminating the need to manually navigate multiple NEC® tables. Whether you're designing in the office or reviewing installations in the field, the app helps you find accurate information in seconds while reducing the chance of calculation or lookup errors. No more flipping through printed code books or searching PDF tables while on the job.
NG Wire™ includes 11 of the most commonly used NEC® tables and calculation tools:
1. Wire Ampacity
2. Ambient Temperature Correction Factors
3. More Than 3 Conductors in Conduit Adjustment Factors
4. Equipment Grounding Conductor (EGC) Sizing
5. Grounding Electrode Conductor (GEC) Sizing
6. Upsized Equipment Grounding Conductor (EGC) Sizing
7. Conduit Fill Tables
8. Conduit Fill Calculations
9. Minimum Cover Requirements
10. Single-Phase Motor Data
11. Three-Phase Motor Data
NG Wire™ requires either a monthly or annual subscription. Every new subscription begins with a free trial that includes full access to all app features. After the trial ends, subscriptions automatically renew unless canceled through your Apple account. You can manage or cancel your subscription at any time from the Settings menu in the app.
NG Wire™ includes data and calculations based on the 2026, 2023, and 2020 editions of the NEC®. Your subscription also includes future updates as new NEC® editions are released (typically every three years). Older NEC® editions will remain available as long as they are still adopted by one or more U.S. jurisdictions. Advance notice will be provided before any older edition is removed from the app.
For assistance: https://ngorange.com/contact-us
Privacy policy and Terms of Service: https://ngorange.com/ng-wire-privacy-and-terms
- NEC® 2026 Support Added: Fully updated with the latest code standards, alongside refined calculations and table data for NEC® 2023 and 2020.
- Modern Interface Redesign: Fresh, easy-to-read layout that adopts modern iOS design standards.
- New Dropdown Pickers: Choose between classic wheel pickers or streamlined dropdown menus for data entry.
- Enhanced Clarity: Added clear labels directly above every calculation answer so you never lose track of your results.
- Expanded Percent Conduit Fill: Removed limits on wire counts—calculate conduit fill percentages for any number and different types of conductors.
- Industry Standard Terminology: Updated the "Increased Size Ground Wire" tool to use standard trade phrasing: Upsized Equipment Grounding Conductor (EGC).
- Improved Layouts: Streamlined the Minimum Cover calculator with dropdown entry, rearranged titles for cleaner navigation, and made minor text tweaks for a smoother user experience.
The developer, NG Orange LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- NG Orange LLC
- Size
- 13.9 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- NG Wire - Monthly $1.99
- NG Wire - Annual $21.99
- Copyright
- © 2024-2026 NG Orange LLC