Lineman's Reference - XFMR LAB

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!)

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.

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