--- title: "Lineman's Reference - XFMR LAB - Reviews, Revenue and Downloads in Canada | Apple App Store" description: "Learn it. Wire it. Energize it. Built by a working journeyman lineman for linemen and their apprentices. The XFMR Lab simulates distribution transformer banks driven by your own wiring — the metering" --- # Lineman's Reference - XFMR LAB — Canada > Transformer Training Simulator ![Lineman's Reference App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/98/96/23/98962364-6946-8c70-5fad-0fd3f3d8fa84/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Digital Apprentice](https://apptail.io/developer/digital-apprentice-MQGc) **Category:** Education **Rating:** 4.7/5 (3 ratings) **Price:** Free **Bundle ID:** digitalapprentice.xfmr **Store:** Apple App Store **Country:** Canada **Version:** 2.0.3 (released 2026-07-04) **Original Release:** 2021-09-12 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id1583878194) **AppTail Page:** [https://apptail.io/app/linemans-reference-xfmr-lab-ulec/canada](https://apptail.io/app/linemans-reference-xfmr-lab-ulec/canada) ## Lineman's Reference Description Learn it. Wire it. Energize it. Built by a working journeyman lineman for linemen and their apprentices. The XFMR Lab simulates distribution transformer banks driven by your own wiring — the metering, fusing, and faulting all behave the way you'd expect in the field. NEW IN 2.0 — BUILT-IN TRANSFORMER TRAINING (Replacing XFMR INFO) Six guided lessons take you from "what's a transformer?" to wiring a 3-pot bank: • Start Here — What is a Transformer? • Dual H Bushings — The Two Wirings & the Nameplate • The Tap Changer — One Pot, Multiple System Voltages • Three-Phase — The Three Phases and How They're Related • Bank Identification — Delta or Wye, Open or Closed • Your First Bank: Delta-Wye Closed (120/208) • More lessons on the way! Work the lessons in order, or jump straight to the labs. ALSO NEW IN 2.0 • The Sandbox (Beta) — wire anything from scratch in a COMPLETELY-customizable lab, with live, vector-based voltage and fault logic baked in. • Death Traps — scenario-based transformer traps linemen run into — and how to navigate them safely. • A brand-new look across every lab — new graphics, sharper, faster, & easier to read in the field. • Voltmeter you can now drag with two fingers; readings update as the leads move. • Parallel the secondary coils by hand in wye secondary labs • Stats that track lab completions, quiz scoring and for-fun stuff like the number of fuses you've blown. • User Customizations - the user can now alter the spec of their labs; from grounding to parallel coil cutover-direction, requiring the 4th cutout, tap changer implementation and more. • 2.0 is FREE for everyone who already owns XFMR Lab — thank you for years of feedback and encouragement. WHAT YOU GET Single Phase — Single Bushing · Dual Bushing Three Phase (closed) — Delta-Delta · Delta-Wye · Wye-Delta · Wye-Wye Three Phase (open) — Open Delta-Delta · Open Wye-Delta Misc — Paralleling · 4th Cutout · Death Traps (6 Scenarios) Advanced — Straight 480 · 240/480 · 277/480 · Corner-Grounded 240/480 · Wye-Wye 5-Wire (120/240 + 120/208) - all now able to be wired up Wye AND Delta on the topside The Sandbox (Beta) EVERY FUTURE UPDATE IS FREE - THE APP IS A ONE-TIME PURCHASE. I'm always working on new updates. TOOLS & REFERENCE • Volt, ohm and rotation meters with real behavior • Nameplate, secondary coil and tap changer animations • Reference diagrams for every standard bank Learning Mode walks apprentices through every wrong-connection check. Journeymen and experienced users can keep this turned off if they'd like. QUIZZES • Classic Quiz — Select each lab you want in your quiz - with graded scoring across each lab. • Advanced Quiz — You're provided with the job-site info and need to pick the right nameplate and coil setup, then wire it. • Bank ID - A beginner's quiz tied into the new XFMR Training lesson plan. The user is provided with different primary and secondary wirings and must correctly identify them. Used by 30,000+ linemen since 2021. Questions? Suggestions? Reach me at info@digitalapprentice.net ## Lineman's Reference Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/0b/54/0c/0b540cae-e5a5-a0a0-16a5-c5a9661d8c0c/ipad_1.png/2752x2064.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2c/7e/88/2c7e8803-b654-e313-a53f-de581f539cc9/ipad_2.png/2752x2064.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c3/38/12/c338124c-4ee5-2287-cca5-58bb9410313e/ipad_3.png/2752x2064.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fb/d6/89/fbd68903-a3a1-7bb7-03d9-222d347cc991/ipad_4.png/2752x2064.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b0/c5/e6/b0c5e6bf-730e-aea7-c796-9b7371d28e49/ipad_5.png/2752x2064.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6f/7e/08/6f7e08d9-9b94-a90f-6d67-9d65b1ff21d6/ipad_6.png/2752x2064.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/79/0e/db/790edb7f-5ab1-c456-c440-41fed830fb9e/ipad_7.png/2752x2064.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d1/4e/8c/d14e8c2f-ce2c-1f32-5398-e2a7726b7ddd/ipad_8.png/2752x2064.png) ## Lineman's Reference Rating Breakdown in Canada - 5 stars: 2 (67%) - 4 stars: 1 (33%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Lineman's Reference Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Paid | United States | Education | #3 | | Top Paid | Canada | Education | #4 | | Top Paid | United States | Overall | #38 | | Top Paid | Canada | Overall | #69 | ## Apps Similar to Lineman's Reference - [Registration & Learning System](https://apptail.io/app/registration-learning-system-fbi/canada) - [CDL Exam Prep 2026 with AI](https://apptail.io/app/cdl-exam-prep-2026-with-ai-Sgs/canada) - [Pre Trip Inspection](https://apptail.io/app/pre-trip-inspection-Ffu/canada) - [CDL Prep Practice Test Genie](https://apptail.io/app/cdl-prep-practice-test-genie-ItR/canada) - [J. 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