HAK Cable Size Estimator
Cable sizing, voltage drop
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
HAK Cable Size Estimator helps engineers right‑size power cables quickly and confidently.
Highlights
Ampacity‑based selection with ambient, grouping, and installation reduction factors (offline tables).
Voltage drop using R‑only or R+X, with temperature correction, frequency input, and power factor.
Systems & materials: single‑ or three‑phase; copper or aluminum; built‑in AWG/MCM data.
Parallel runs: evaluate single run or search for multi‑run solutions when needed.
Motor helper: choose kW & IE class to auto‑estimate current (with optional 1.25× FLA).
Fast, offline calculations; 8 languages supported.
How it works
Enter load (or use Motor helper).
Set environment: temperature, grouping, installation.
(Optional) Enable R+X and voltage‑drop constraint.
Get the smallest cable that meets your constraints—single or parallel runs—plus a concise math trace.
Free vs Premium
Free: Ampacity sizing, reduction factors, manual parallel runs, presets, motor helper.
Premium (HAK Pro): Voltage‑drop constraint check (R or R+X), automatic parallel‑run search, frequency input for R+X.
Disclaimer
Results are for preliminary sizing. Always verify against your project’s governing standard and manufacturer data. “NEC” and “National Electrical Code®” are referenced for context; this app is not endorsed by NFPA.
What’s New (1.1.8)
Initial release with ampacity sizing (reduction factors), R+X voltage‑drop, parallel runs, motor assistant, and multi‑language UI. Fixed Subscription issues, added links to EULA and Privacy in binary, also added Eula in app description.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
New version for fixed In-App Purchases and Subscriptions
The developer, Damaris Koehler, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Damaris Koehler
- Size
- 3.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Hindi, Italian, Japanese, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2025 HAK Solutions LLC