Master Electrician License Ex

NEC 2023 Calcs, Code, Practice

$9.99 · Designed for iPad. Not verified for macOS.

Also Included In

v2.0 — eight live NEC calculators, a searchable code library, 160 practice items with article chips, and a personal workbench for saved calcs and notes. This app is the working electrician's toolkit, rebuilt around eight live calculators, a searchable NEC 2023 code library, a practice quiz with article-level citations, and a personal workbench for saved calculations, bookmarked articles, and field notes. LIVE NEC CALCULATORS - Voltage Drop — 1φ and 3φ, copper or aluminum, full conductor table, 3% / 5% targets - Conduit Fill — mix sizes in EMT, RMC, IMC, PVC-40 or PVC-80; verifies Chapter 9 Table 1 - Box Fill — Article 314.16(B) volume allowances for conductors, yokes, EGCs, clamps - Service Load — Article 220 dwelling standard method with cooking, dryer, HVAC - Motor Branch — 125% FLC conductor, Table 430.52 OCPD, 430.32 overload - Ampacity Adjustment — Table 310.16 base × temperature correction × CCC adjustment × 110.14(C) terminal cap - Ohm's Law — single- and three-phase power, current, voltage, resistance - Wire Size from VD% — smallest AWG meeting your voltage-drop target Every result shows the NEC articles it relies on, and one tap saves it to your workbench for later. CODE LIBRARY Searchable, offline-first reference covering definitions, services, overcurrent protection, grounding and bonding, conductors, raceways, motors and transformers, GFCI / AFCI / SPD, calculations, and emergency systems. Bookmark any entry and add your own note. CODE PRACTICE 160 practice items across 16 NEC topics with progressive difficulty. Every item is tagged with the relevant article numbers. Card-style layout with optional schematic, explanation drawer, and bookmarks for review. MOCK EXAM Timed simulation with three formats — 80-question Master at 75% pass, 100-question Master at 70% pass, or a 30-question sprint. Question navigator, marked-for-review tracking, and article-level review after submission. MY WORKBENCH The toolkit's signature: every saved calculation, bookmark, and field note in one place. Rename runs, add notes to bookmarks, jot down jobsite observations, permit numbers, takeoff totals. NEC 2023 READY Updated for the 2023 cycle, including 230.85 dwelling emergency disconnect, 210.8 GFCI expansions, 240.87 arc-energy reduction, 406.12 tamper-resistant expansion, Article 625 EV charging overhaul, and 705.13 Power Control Systems. BUILT FOR iPHONE AND iPAD Adaptive layout fills an iPad with a sidebar split view and gives an iPhone a tappable dashboard. Dark panel-schedule visual identity — navy base with copper accents — easy to use on long jobsite sessions. DISCLAIMERS Master electrician requirements and NEC editions vary by state and local jurisdiction. Always verify your AHJ's adopted edition and pass threshold before sitting for the exam. This app is an independent toolkit and is not affiliated with NFPA, PSI, Prov, or any state licensing board.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Eight live, interactive NEC 2023 calculators (Voltage Drop, Conduit Fill, Box Fill, Service Load per Article 220, Motor Branch per 430.22/52/32, Ampacity Adjustment, Ohm's Law, Wire Size from VD%). Each calculator accepts inputs, computes a real numeric result, and cites the relevant NEC article. A "My Workbench" module where users save calculations, bookmark code articles with personal notes, and write freeform field notes — persistent user-generated content. Searchable, offline Code Library covering the NEC 2023 articles a master electrician references most often. NavigationSplitView with a persistent sidebar on iPad and a dashboard with module cards on iPhone (the previous TabView root has been removed). A new "panel-schedule" visual identity (matte navy + copper accents) and an NEC article chip UI primitive that appears throughout the calculators, library, and practice items.

Version 2.0

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.

    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
    Yuhsiu Lai
    Size
    5.7 MB
    Category
    Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 iTech Tools
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

    More by Yuhsiu Lai