FREE HANDS-ON EXERCISES
ExercisesLearn the basics. Then try a real panel.
Short, hands-on practice for anyone new to industrial electrical work and PLCs. Start with the meter, then build ladder logic and run it.
ELECTRICAL
Multimeter, voltage checks and lockout
3 exercises · Start with the first
ELECTRICAL · ABOUT 3 MINUTES
How to read a multimeter
Pick the right dial setting, plug the leads into the right jacks, and read volts, ohms, OL, continuity and a minus sign.
Start the exercise
ELECTRICAL · ABOUT 4 MINUTES
3 phase voltage: how to check it
Phase to phase, phase to ground, the 24 V DC supply, line side vs load side, and the live–dead–live test.
Start the exercise
ELECTRICAL · ABOUT 3 MINUTES
Lockout tagout procedure
Notify, stop, isolate, lock, tag, release stored energy, verify. Then the restore steps, and three quick checks.
Start the exercisePLC
Ladder logic: build rungs and run them
3 exercises · Start with the first
PLC · ABOUT 3 MINUTES
XIC and XIO explained
Turn on a light with a push button, make a “ready” light with XIO, then AND (series) and OR (branch).
Start the exercisePLC · ABOUT 4 MINUTES
Seal-in (start/stop) circuit
Make a light stay on after Start is released, then add a Stop button. Learn why Stop uses XIC.
Start the exercisePLC · ABOUT 5 MINUTES
Quiz buzzer lockout
Three players, one winner: seal-in contacts, a host reset, and XIO interlocks so only one light comes on.
Start the exerciseCommon questions
Are these exercises free?
Yes. All six exercises are free, need no account, and work on a phone or a computer.
Which exercise should I start with?
New to electrical work? Start with how to read a multimeter, then 3 phase voltage and the lockout tagout procedure. For PLCs, start with XIC and XIO, then the seal-in circuit, then the quiz buzzer.
Do I get a certificate?
Not for the exercises. They’re quick practice. Certificates come from the training levels: Levels 1 and 2 are free with a free account.
How long does each exercise take?
About 3 to 5 minutes. Each one explains why when you get a step wrong, and you can run it again as often as you like.
PUT IT TOGETHER
Ready for a real panel?
Level 1 uses all of it: lock out a motor starter panel, prove zero energy with the meter, wire the control circuit, then read the PLC program that runs the motor. It's free.
Training practice only. Always follow your site's written energy control procedure, your employer's authorization rules and your meter maker's instructions on real equipment.