• The Live Sim tab is where you work. It shows a ladder/wiring diagram of the panel plus your tools.
• Your job: figure out what’s wrong with the panel by taking measurements and reasoning — the same way you would in the field.
• Green on a wire means voltage is present; a gap or dimming shows where power stops.
• Left-click switches and buttons to operate them. Right-click almost anything for its specs and options.
• Drag the meter’s probe tips onto the round connection points to take a reading.

• Instructions — this guide.
• Live Sim — the interactive panel: ladder diagram, DMM, screwdriver, relay pop-outs, the visualizations and the marker. This is your workspace.
• Reference Info — component specifications, the 7-step troubleshooting method, and the safety reference (OSHA / NFPA 70E).
• Results Feedback — your own 7-step record as you work, alongside the ideal 7-step, plus your solved-fault history and feedback.
• Instructor — where an instructor injects faults and sets up scenarios. On a solo seat this is your own setup area.

Almost every floating element is movable and resizable so you can lay the bench out your way:

• Move — drag a panel by its title bar / grip (the meter, the Controls box, the Options box, the DC supply, the Coach chat, the Event Log).
• Resize — drag the small corner handle (◢) at a panel’s bottom-right.
• Coach chat typing field — drag the thin ↕ bar just above where you type to make the typing area taller or shorter (shorter uncovers more of the conversation above).

• Pick your meter — use the Meter dropdown in the Options box to choose the Fluke 115 or a Generic DMM.
• Pick the function — DC volts (VDC), AC volts (VAC), resistance (Ω), or continuity. Right-click the meter for its function menu and specs.
• Take a reading — drag the red and black probe tips onto the round connection points (terminals / pins). The leads follow the meter if you move it.
• Continuity — in continuity mode the meter beeps on a good path (low resistance) and stays silent on an open. The beep band is shown on the meter’s spec card.
• Resistance — measure with the circuit de-energized; a live circuit will give false readings (and the Event Log will warn you).

• Turn the DC Supply on from the Options box. Its panel appears with adjustable output.
• Set the voltage — right-click the supply (or use its panel) to set the output (about 1–30 V).
• Clamp probes — drag the supply’s red/black clamp probes onto connection points to inject test voltage; they rest near their jacks when not in use.
• Ground / isolate — toggle whether the supply common is bonded to earth ground or left floating; the earth-ground symbol shows when grounded.
• Over-current — if you exceed the supply’s limit it trips (output drops to ~0 A) until you reset it.

• Switches (SW3, SW4, SW12, LS1) — left-click to toggle. Their on-screen button and the diagram update together.
• SW6 — a multi-position switch: click its landing zones to move between positions (e.g. AUTO / OFF / MAN).
• Push-buttons (PB9 Start / PB10 Stop) — press and hold (they’re momentary); release to let them spring back.
• Disconnect (DISC) — click to open/close the main disconnect.
• Fuse — right-click only for its options (it won’t respond to a left-click, on purpose).
• Rheostat (RH1) — drag the RH1 Speed slider (or its drag handle) to change resistance; the live Ω value shows beneath it.

• Relays (CR1, CR2) — left-click a relay to pop it out to a bench view where you can test the coil and contacts; reinstall when done. Coil LEDs and an armature indicator show whether it’s energized.
• Removing parts on a live panel — allowed, but the sim warns you (and logs it) because it’s unsafe practice.
• Confirm before you swap — before replacing a part you’re asked to commit to a good/bad verdict. Swapping a good part counts against you — prove it’s bad first.
• Fuse / breaker — check for an open fuse or a tripped breaker; the F1 indicator branch and CB2 trip curve help you reason about protection.

• Drag the screwdriver to a wire landing to disconnect (lift) that conductor, then again to reconnect it — with a matching unscrew / screw-in sound.
• Lifting a wire opens that path in the circuit, so your next measurements reflect it. Remember to reconnect everything before you call the job done.
• Only real wire segments can be lifted — internal pin-to-coil/contact connections inside a relay base can’t be unscrewed.

• Insert a shorting or ground jumper between connection points to test theories (e.g. bypass a suspect contact).
• Each jumper is named (A, B, …) and can be given a resistance or an intermittent behavior for realistic “sometimes-works” faults.
• Jumpers show up in the visualizations and respond to your measurements like any other conductor.

• VoltsViz — colors the wiring by voltage present (bright green at the source fading toward white near 0 V), so you can see where voltage stops.
• AmpsViz — animates moving dots in the direction of current; the dots speed up with more current, and they include the common/return paths that carry current at ~0 V.
• MeterViz — shows the path your meter is measuring: orange dots flowing through the leads and the segment under test.

• Click the yellow MARKER pen (above the screwdriver) to enter marking mode, then click components, wires, or connection points you suspect — each gets an amber highlight.
• Right-click the pen for options (click-reach, translucency, highlight size).
• Click Submit Marks when done — your selections are time-stamped to the Event Log so they can be compared against the actual fault.

The Event Log quietly records what you do — switch operations, meter-function changes, wire lifts, jumper inserts, suspect marks, and safety warnings — each time-stamped. It’s how your 7-step record and feedback get built, and it’s a great way to retrace your own steps.

• The Coach chat sits at the lower-right of the Live Sim screen. Ask it about the panel, a reading, or your next step.
• How much it helps depends on the assistance level (from full Guide down to a hands-off Assessor) — its title shows the current level.
• Type in the box; press Enter to send, Shift+Enter for a new line.

Note: in this build the chat is a working interface shell; the live AI mentor connects through the platform.

• Print (in the Options box) produces a clean black-on-white printout of the panel.
• The Reference Info tab carries the component specs, relay pinouts, the 7-step method, and the safety references you’ll want while you work.

1. Open the Live Sim tab and look the panel over. Note the switch states (the panel starts with the disconnect open and most switches off).
2. Pick the Fluke 115 from the Meter dropdown and set it to DC volts.
3. Drag the black probe to the supply common and the red probe to the +24 V source — confirm you read about 24 V.
4. Energize the panel: close the disconnect, then work the switches in a sensible order and watch the wiring turn green.
5. When something doesn’t behave, follow the voltage: probe along the path until the reading changes — that’s where to look.
6. Form a theory, mark your suspects, confirm with a measurement (or a resistance check, de-energized), and only then replace a part.
7. Reconnect any lifted wires, reset breakers / replace fuses, and review your Results Feedback.