Lineman's Reference - XFMR LAB

Two new labs are available with the newest update! Test your transformers skills with Advanced Labs! Wye 277/480 and Wye Wye with 120/240 service (5 wire service) are now available under the 'Advanced Labs' tab in the Lab Menu and Diagram Menu. Proper NEC Standard secondary wire coloring. Various Small Bug Fixes. Company Customized Experience - ask your company to reach out to us!

Various Typos and Small Bug Fixes Implementation of the Customized Experience for a company New background for Home, Lab Menu, and Diagrams Menu

Updated Sound and Vibrate buttons in settings Various Bug fixes Implemented new background in all labs Fixed issue with touching ground strap “through” wires Fixed issue with Home Button not working when settings are visible in labs Added “Hide Disclaimer at Start” option in Home Screen settings Fixed an issue when Ohming in “Troubleshooting”

Minor changes and bug fixes.

New banks! Check the advanced tab in the Lab Menu to see 3 new labs!

Updated Store Screenshots.

A couple bug fixes: Error with 277/480 diagram. Error on Dual Bushing Topside lab's Nameplate.

Couple small bug fixes, new company added to the Customized Experience.

Fixed an issue found in the Dual Bushing Topside lab.

Basics of Transformer Banking Lab. Various bug fixes.

Fixed a couple of Typos. Added more info to 'Fusing' in XFMR INFO.

A new Advanced Quiz has been introduced. Test your transformer knowledge further!

Bug Fixes: Bug where you couldn't use individual grounds for grounding secondary on 277/480 lab. Ground straps missing on some diagrams.

Couple of bug fixes. Thank you to those that reach out and bring things to my attention!

Added POLETOP an advertisement. You can turn off advertisements in the settings on the homes screen settings.

Added an advertisement for Lineman's Reference - URD

Fixed a minor bug in the Delta Delta Closed Bank lab.

Fixed a bug where rotation meter sometimes would not work properly.

XFMR Lab 2.0 — the biggest update since launch. NEW: Built-in Transformer Training (replaces XFMR Info). Six guided lessons take you from "what's a transformer?" to wiring a 3-pot bank — Start Here, Dual H Bushings, The Tap Changer, Three-Phase, Bank Identification, and Your First Bank: Delta-Wye Closed. More lessons on the way. More lessons on the way soon! NEW: The Sandbox (Beta) — wire anything from scratch in a fully customizable lab, with live, vector-based voltage and fault logic baked in. NEW: Death Traps — scenario-based transformer traps linemen run into, and how to navigate them safely (3 scenarios with more on the way). NEW: User Customizations — set the spec of your own labs: grounding, parallel coil cutover direction, requiring the 4th cutout, tap changers, and more. NEW: Bank ID quiz — a beginner quiz tied to the Training lessons; identify primary and secondary wirings on sight. NEW: Stats — track lab completions, quiz scores, and for-fun numbers like how many fuses you've blown. ALSO: • A brand-new look across every lab — new graphics, sharper and easier to read in the field. • Tap changer, nameplate, and secondary coil animations. • Parallel the secondary coils by hand in wye-secondary labs. • Advanced labs can now be wired Wye OR Delta on the topside. • Voltmeter now drags with two fingers; readings update as the leads move. 2.0 is FREE for everyone who already owns XFMR Lab — and every future update is free, too. One-time purchase. Thank you for years of feedback and encouragement.

New • Amp clamp-on meter in the Sandbox: pull it out of the tool drawer, clamp it on any wire, and read the real current on that conductor. Try it on a loaded secondary leg (~100 A) vs. the primary jumper (~1.7 A), or on a 3-phase-loaded delta corner to catch the √3 between winding and line current. • Fourth-cutout lab rebuilt as a guided, hands-on walkthrough. You energize the bank with the fourth cutout open and watch the ferroresonance blow happen, instead of just reading about it. Finishes with an unaided practice run you grade yourself. • New customization option for starting Wye labs with the transformers already cut-over to the direction of your choice. Improved • If the app is waiting on Tutorial completion, tapping a locked button now tells you why and that it takes about 5 minutes. Longtime users upgrading from 1.x get a Skip Tutorial option after a quick look at what's new in 2.0. • Learning Mode warning indicators now update live as you wire: the (!) flags appear and clear while you work, not only when you hit Check Work. • The voltmeter steps out of the way while you drag a lead or draw a wire, then slides back so the reading stays visible. • The correct-wiring diagram now shows the high leg on the phase you've actually set, instead of cycling through all three. • Sandbox vector wheel now reads in the standard orientation (A at the 8 o'clock position) with a phase-displacement readout. • Sharper splash screen update Fixed • Wire delete now works along the full length of every wire, including the ones that used to have dead spots, and no longer fires in the empty corner of an L-shaped run. • Corner-ground and several banking labs no longer blow a fuse on some correct wirings. • Voltages across the bank read true after a fuse blows, and a pot with its coils cut to series now reads the correct 240/120/120 split on wye labs. • Banking nameplate always shows the correct primary voltage. • Numerous other small bug fixes across each lab (Existing users: thank you for the reports and feedback!)