NECElectricalCodeIllustrated
Electrical Code Illustrations
USD 2.99
Here's a ready-to-use App Store description:
Illustrations of Electrical Code (NEC) — From Utility Service to Branch Circuits
A visual reference library for electricians, electrical engineers, inspectors, and students — covering the National Electrical Code from the utility service entrance all the way to branch circuits and special systems.
Browse 160 hand-picked illustrations organized into 11 categories:
Distribution Systems — Site plans, ring bus diagrams, and voltage distribution systems
Service Entrance — Overhead and underground service, utility pole connections, and clearance requirements
Panel Layouts & Schedules — Residential and commercial panel diagrams and load schedules
Wiring Diagrams & Floor Plans — Residential floor plans, schematic wiring diagrams, and rough-in illustrations
Grounding & Bonding — Electrode systems, bonding diagrams, ground-fault return paths, and NEC Article 250 references
Overcurrent & Motor Circuits — Motor branch circuit protection, conductor sizing, and fault current diagrams
Load Calculations — Conductor sizing flowcharts, demand tables, and voltage drop formulas
Low Voltage & Special Systems — NEC Article 725, CCTV, access control, intercom, and integrated LV systems
Safety & Code Compliance — Inspection checklists, permit flowcharts, and building code references
Fire Alarm Systems — Riser diagrams, wiring topologies, zone layouts, and sequence of operations
Building Automation — BACnet/IP, BMAS overviews, HVAC control flowcharts, and ventilation diagrams
Features:
Swipe left and right to flip through illustrations within any category
Pinch to zoom in for fine detail — pan while zoomed
Double-tap to zoom in, double-tap again to reset
Bookmark any illustration as a favorite for quick access
Works on iPhone and iPad
Full Dark Mode support
A practical field and study companion for anyone working with the NEC.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
The developer, Yuhsiu Lai, 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
- Seller
- Yuhsiu Lai
- Size
- 498.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 iTech
