



Army MOS 12R Interior Electrician
The Army uses electricity to do many jobs, including lighting hospitals, running power tools, and
operating computers. Interior Electricians installs and maintains interior electrical systems up to 600 volts.
Reads and interprets drawings, plans, and specifications. Installs service panels, switches and electrical
boxes. Installs metallic and nonmetallic sheathed cable, conduit and special electrical equipment. Installs
service drop. Uses test equipment to test operational condition of circuits. Assists in performance of
combat engineer missions. Uses test equipment to isolate malfunctions and repairs defects in systems
and components. Inspects interior electrical systems/components for proper installation in accordance
with National Electrical Code and local ordinances.
Some of your duties as an Interior Electrician may include:
- Install and wire transformers, junction boxes, and circuit breakers, using wire cutters, insulation
strippers, and other hand tools
- Read blueprints, wire plans, and repair orders to determine wiring layouts or repair needs
- Install service panels, switches and electrical boxes
- Use of test equipment to test operational conduction of circuits
- Cut, bend, and run wires and conduits (pipe or tubing)
- Inspect power distribution systems, shorts in wires, and faulty equipment using test meters
- Repair and replace faulty wiring and lighting fixtures
- Install lightning rods to protect electrical systems
Training
Job training for a Interior Electrician requires nine weeks of Basic Training, where you'll learn basic
Soldiering skills, and seven weeks of Advanced Individual Training and on-the-job instruction, including
practice in the installation and repair of electrical wiring systems. Part of this time is spent in the
classroom and part in the field. Some of the skills you'll learn are:
- Fundamentals of electricity
- Electrical circuit troubleshooting
- Safety procedures
- Techniques for wiring switches, outlets, and junction boxes
Advanced Responsibilities
Advanced level Interior Electricians provides guidance, supervises and trains other Soldiers within their
discipline. As an advanced level Interior Electrician, you may be involved in:
- Supervise installation and maintenance of interior electrical systems
- Plan electrical system layout using drawings, plans, specifications and wiring diagrams
- Coordinate construction planning and advising on electrical construction
- Use of testing equipment to isolate malfunctions and repairing defects in systems and components
- Inspect interior electrical systems/components for proper installation
Related Civilian Jobs
The skills you'll learn, as an Interior Electrician will help prepare you for a future with building or electrical
contracting firms. Some Army Interior Electricians will be interested in pursuing a career as a self-
employed electrical contractor.
Related Army Positions
Horizontal Construction Engineer (12N)
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