ConduitLab: NEC Calculator

Ampacity Voltage Conduit Fill

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

See conduit fill before you pull wire. ConduitLab adds a 2D visualizer plus code-based ampacity, voltage drop, and PDF reports. ConduitLab is a professional NEC electrical calculator for electricians, inspectors, contractors, and engineers. It combines ampacity, voltage drop, conduit fill, wire sizing, PDF reports, and an interactive 2D conduit fill visualizer in one field-ready app. SEE CONDUIT FILL BEFORE YOU PULL Most electrical calculators only show a percentage. ConduitLab helps you see the layout. Use the 2D conduit fill visualizer to view conductors inside the raceway, check fill percentage, spot tight layouts, and use X-Ray mode for a clearer look at packed conduits. Plan pulls, review layouts, and catch conduit fill problems before the wire is already in the pipe. CORE ELECTRICAL CALCULATIONS Ampacity — real-world derating applied Calculate wire sizing with ambient temperature correction, rooftop exposure adjustments, terminal temperature limits, conductor count effects, and continuous-load factors applied together. Voltage Drop — catch issues before inspection Run single-phase and 3-phase voltage drop calculations for branch circuits and feeders, including advanced options for long runs, larger conductors, and field conditions. Conduit Fill — visual and code-based Apply NEC Chapter 9 fill limits while using the 2D conduit fill visualizer to better understand how conductors fit inside the conduit. INSPECTOR-READY PDF REPORTS Generate clean, professional electrical calculation reports for documentation, submittals, inspections, and permanent records. Reports can include: • Project inputs and calculated results • NEC-based citations by edition • Ampacity, voltage drop, and conduit fill summaries • Jobsite-ready calculation records • Clean documentation for field review LITE AND PRO OPTIONS ConduitLab includes a Lite mode for common residential and light commercial calculations. ConduitLab Pro unlocks: • Full wire size range up to 2000 kcmil • 3-phase and exact voltage drop tools • Interactive 2D conduit fill visualization • X-Ray conduit visualizer mode • Unlimited PDF exports • Expanded professional features BUILT FOR JOBSITE USE • Offline-first calculations • Fast, repeatable results • No account required • Designed for electricians, inspectors, contractors, and engineers • Built for real field workflows, not generic desktop math IMPORTANT DISCLAIMER ConduitLab is a reference and documentation tool only. It does not provide engineering services or code-compliance certification. Users are responsible for verifying all results and complying with applicable electrical codes, local amendments, and Authority Having Jurisdiction requirements. Subscriptions unlock advanced features and unlimited PDF exports. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • 5.0
    out of 5
    3 Ratings

This update improves voltage drop accuracy for larger wire sizes, refines the conduit fill visualizer, and fixes a display issue that could affect grounding conductor fill calculations.

Version 1.03

The developer, Teleios AI, 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:

    • Identifiers
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Teleios AI, LLC
Size
  • 60.7 MB
Category
  • Utilities
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • ConduitLab Pro (Monthly) $4.99
  • ConduitLab Pro (Weekly) $1.99
  • ConduitLab Pro (Yearly) $34.99
  • Learn More
Copyright
  • © 2026 Teleios AI, LLC
  • Developer Website
  • Privacy Policy

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