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Michigan RV Repair
COLLEGE/EMPLOYER COURSE REVIEW · DRAFT

RV Electrical Systems Fundamentals

An introductory course in 12-volt DC distribution, 120-volt AC concepts, batteries, converters, inverters, protected circuits, wiring documentation, and systematic diagnostic reasoning. Physical exercises are restricted to low-voltage, current-limited training equipment.

MRR-EL10124 proposed hoursHybrid: classroom and de-energized, current-limited labs
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Course learning outcomes

  1. Explain electrical hazards and demonstrate stop-work decision making.
  2. Differentiate RV 12V DC and 120V AC functions and protective devices.
  3. Identify major electrical components and interpret simplified diagrams.
  4. Set up a meter to measure low-voltage DC potential on a protected trainer.
  5. Trace and document simulated open-circuit and high-resistance faults.
  6. Prepare a defensible diagnostic note with measurements and next steps.

Instructional modules

1. Electrical safety and orientation · 3 hours
Hazard assessment, isolation, PPE, meter inspection, labels

Classify mock repair scenarios by safe/unsafe; create a stop-work plan

2. 12V DC fundamentals · 4 hours
Voltage, current, resistance, series/parallel paths, fuses

Measure supply and load voltages on a fused 12V teaching board

3. 120V AC systems: concepts only · 4 hours
Shore power, branch protection, GFCI, transfer switching, boundaries

Identify AC components on diagrams and photographs; no energized AC work

4. Energy storage and conversion · 4 hours
Battery families, converter, inverter, DC/DC, solar overview

Trace a simulated battery-to-load path and classify system functions

5. Schematics, meters and documentation · 3 hours
Symbols, reference points, lead placement, error checking

Translate a simplified schematic into a test-point worksheet

6. Troubleshooting and capstone · 6 hours
Symptom verification, fault isolation, measurements, service reporting

Locate two instructor-inserted low-voltage faults and write a report

Practical assessment

Safe 12V trainer inspection, measurement, fault identification, service report

Proposed learning equipment

  • 12V current-limited DC power supply with inline fuse
  • Low-power loads: LEDs and resistive indicator modules
  • Enclosed fuse holders, terminal blocks, prebuilt plug-in leads
  • CAT-rated meter suitable for the demonstration context, insulated probes
  • Eye protection, nonconductive work surface, instructor-controlled fault switches

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