A Commercial Equipment Technician finds out why industrial and commercial electronic equipment (motor controls, sensors, power supplies, transmitters, control panels) has stopped working, then fixes it, tests it, and records what you did. The work is a loop: listen to the operator, measure, think, fix, verify, document. You do not need a four-year degree. About 46% of workers hold an associate's degree and 32% a post-secondary certificate, and many start in a community college electronics or industrial maintenance program. This roadmap takes you from basic electricity to troubleshooting with a
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 4 · about 14 weeks
Understand Ohm's law (V=IR), power (P=VI), series and parallel circuits, AC vs DC, and basic components (resistors, capacitors, diodes, transistors, relays). Use a digital multimeter to measure voltage, current, resistance and continuity. Read simple schematics and learn electrical safety basics, including lockout/tagout and OSHA general awareness. Practice by building circuits on a breadboard or in a free simulator and predicting each reading before you measure it.
Electrical safety, lockout/tagout and OSHA awareness
Every task you will do, from checking a fuse to swapping a part, involves energy that can hurt you. Employers hire people who work safely before people who work fast, so this comes first.
Ohm's law, power and the language of circuits
Almost every fault you will diagnose comes down to a voltage, current or resistance that is not what it should be. If you can predict what a circuit should read, you can spot what is wrong.
Using a digital multimeter
The multimeter is the tool you will reach for on almost every call. Using it correctly, and knowing what the reading means, is the heart of troubleshooting.
Series and parallel circuits, and building them
Real equipment is made of series and parallel sections. Knowing how voltage and current split lets you predict what a healthy circuit reads and see what a fault changes.
Basic components and AC vs DC
You need to know what each part does and how it fails. Most repairs are replacing a component that has failed in a recognisable way.
Reading simple schematics
Every repair starts from a drawing. If you can follow a schematic, you know where to measure and what you should find.
Then 3 more stages (about 196 weeks in all) with lessons, drills, projects, 10 interview questions with strong answers and free resources.