NOC 9525 – Assemblers, fabricators and inspectors, industrial electrical motors and transformers



This unit group includes workers who assemble, fabricate, fit, wire and inspect heavy-duty industrial electrical equipment. They are employed by manufacturers of industrial electric motors, transformers, control equipment, railway locomotives, transit vehicles and other heavy electrical equipment.

Progression to supervisory positions is possible with experience.

Main Duties

Assemblers in this unit group perform some or all of the following duties:

  • Assemble and fit metal and other prefabricated parts to close tolerances according to blueprints to build heavy-duty electric motors or transformers
  • Assemble stators or armatures for heavy-duty electric motors; compress steel laminations to build transformer cores; assemble windings into core using overhead cranes and make electrical connections using crimping, brazing and soldering equipment
  • Assemble and fit electrical motor or transformer auxiliary equipment such as bushings, tap changes, conduit boxes, heating devices, protective equipment and cooling equipment
  • Set up and adjust production machinery and equipment, such as coil winding machines, for the manufacture of heavy-duty electrical equipment
  • May perform basic tests on electric motors.

Electrical fitters and wirers perform some or all of the following duties:

  • Interpret engineering drawings, electrical schematics and blueprints
  • Fit motor starters, contactors, capacitors, circuit breakers, voltage regulators, printed circuit boards or other electrical control devices into switchboards and panelboards to produce automated processing control equipment, electrical distribution panels, or other industrial electrical control equipment
  • Wire electrical connections for switchboards and panelboards
  • Assemble panelboard and switchboard cabinets and install bus bars used to carry heavy electrical current
  • May operate metal fabricating equipment to fabricate or modify bus bars.

Inspectors in this unit group perform some or all of the following duties:

  • Monitor production and troubleshoot production problems
  • Check final assembly of electric motors, transformers or control equipment for adherence to quality control standards
  • Collect, record and summarize inspection results.

Employment Requirements

  • Completion of secondary school is usually required.
  • College courses in electricity or electro-technology may be required.
  • Several years of on-the-job training are usually provided.
  • Set-up persons, inspectors and leadhands in this unit group may require experience as an assembler, fitter or wirer in the same company.

All Titles

  • AC (alternating current) and DC (direct current) motors fitter-assembler
  • alternating current (AC) and direct current (DC) motors fitter-assembler
  • alternator tester
  • armature assembler – industrial electrical equipment
  • armature coil former – industrial electrical equipment
  • armature coil winder – industrial electric equipment
  • armature inspector – industrial electrical equipment
  • armature insulator – industrial electrical equipment
  • armature winder – industrial electrical equipment
  • assembler and wirer, electrical panels
  • assembler and wirer, motors and generators
  • assembler and wirer, switchgear
  • assembler, carbon brushes
  • assembler, commutators
  • assembler, current transformers
  • assembler, electrical control panel
  • assembler, heavy-duty transformer
  • assembler, industrial brakes and AC (alternating current) motors
  • assembler, industrial brakes and alternating current (AC) motors
  • assembler, laminated cores – industrial electrical equipment
  • assembler, motor and generator – industrial electrical equipment
  • assembler, motor control centres – industrial electrical equipment
  • assembler, panelboards – industrial electrical equipment
  • assembler, rotating field coils – industrial electrical equipment
  • assembler, switchgear and control panel
  • assembler, switchgear and control panel – industrial electrical equipment
  • assembler, switchgear panels – industrial electrical equipment
  • assembler, switchgear racks – industrial electrical equipment
  • assembler, transformer accessories
  • assembler, transformer cores
  • assembler, transformer gas detector relays
  • automotive wiring harness inspector – industrial electrical equipment
  • builder and welder, stator and rotor cores – industrial electrical equipment
  • bushing assembler, high voltage transformers
  • bushing core winder – industrial electrical equipment
  • carbon brush assembler
  • carbon brush maker
  • circuit breaker fitter – industrial electrical equipment
  • clamper, transformer assembly
  • clamper, transformer assembly coils
  • coil assembler – industrial electrical equipment
  • coil builder – industrial electrical equipment
  • coil clamper, transformer assembly
  • coil former – industrial electrical equipment
  • coil installer, motor and generator – industrial electrical equipment
  • coil maker – industrial electrical equipment
  • coil shaper – industrial electrical equipment
  • coil taper, hand – industrial electrical equipment
  • coil winder, transformer
  • coil-winding machine setter – industrial electrical equipment
  • commutator assembler
  • commutator assembler – industrial electrical equipment
  • control panel assembler
  • control panel assembler – industrial electrical equipment
  • control panel technician – industrial electrical equipment
  • core assembler – industrial electrical equipment
  • core lapper, transformers
  • core stacker, transformers
  • current-transformer assembler
  • current-transformer coil winder
  • custom electrical panel assembler
  • electric meter tester – industrial electrical equipment
  • electric motor assembler
  • electric motor inspector
  • electrical continuity tester – industrial electrical equipment
  • electrical control equipment fitter-assembler
  • electrical control panel assembler
  • electrical control panel final assembler
  • electrical control panel subassembler
  • electrical fitter
  • electrical fitter – industrial electrical equipment
  • electrical inspector, locomotive
  • electrical panel assembler and wirer – industrial electrical equipment
  • electrical switchgear inspector
  • electrical switchgear panel wirer
  • electrical switchgear tester
  • electrical switchgear wireperson
  • electrolytic cell repairer – industrial electrical equipmentelectrolytic cell repairman – industrial electrical equipment, electrolytic cell repairwoman – industrial electrical equipment
  • field coil taper – industrial electrical equipment
  • final assembler, electrical control panel
  • fitter-assembler – electrical control equipment
  • fitter-assembler – industrial electrical equipment
  • fitter-assembler, AC (alternating current) and DC (direct current) motors
  • former, heavy-duty coils – industrial electrical equipment
  • generator tester – industrial electrical equipment
  • hand coil taper – industrial electrical equipment
  • heavy-duty coil former – industrial electrical equipment
  • heavy-duty transformer assembler
  • heavy-duty transformer coil winder
  • high voltage transformer bushing assembler
  • industrial brake and AC (alternating current) motor assembler
  • industrial brake and alternating current (AC) motor assembler
  • industrial electric equipment assembler
  • industrial electric equipment fabricator
  • industrial electric equipment inspector
  • inspector – large transformer manufacturing
  • inspector and tester, AC (alternating current) and DC (direct current) motors
  • inspector and tester, AC and DC motors
  • inspector, AC (alternating current) and DC (direct current) motors
  • inspector, automotive wiring harnesses
  • inspector, electrical control panel
  • inspector, electrical motor
  • inspector, electrical switchboards and panels
  • inspector, electrical switchgear
  • inspector, electrical switchgear panel
  • inspector, motor and generator
  • inspector, winding – large electric motors manufacturing
  • installer, motor and generator coils – industrial electrical equipment
  • laminated core assembler – industrial electrical equipment
  • lamination stacker – industrial electrical equipment
  • lapper, transformer cores
  • large power transformer coil winder
  • large transformer coil winder
  • locomotive electrical inspector
  • motor and control tester
  • motor and generator assembler – industrial electrical equipment
  • motor and generator assembler and wirer
  • motor and generator inspector
  • motor and transformer tester
  • motor control assembler – industrial electrical equipment
  • motor winder – industrial electrical equipment
  • motor-coil and generator-coil builder
  • motor-coil and generator-coil installer – industrial electrical equipment
  • panelboard assembler – industrial electrical equipment
  • pole shoe assembler – industrial electrical equipment
  • power transformer assembler
  • power transformer core builder
  • rotating field coil assembler – industrial electrical equipment
  • rotor assembler – industrial electrical equipment
  • rotor coil former – industrial electrical equipment
  • rotor core assembler – industrial electrical equipment
  • salvager, storage battery
  • setter, coil-winding machine – industrial electrical equipment
  • stator inspector – industrial electrical equipment
  • stator-core and rotor-core builder and welder – industrial electrical equipment
  • storage battery salvager
  • subassembler, electrical control panels
  • switchgear and control panel assembler – industrial electrical equipment
  • switchgear assembler and wirer
  • switchgear fitter-wirer
  • switchgear fitter-wirer – industrial electrical equipment
  • switchgear panel assembler – industrial electrical equipment
  • switchgear panel installer-fitter
  • switchgear rack assembler – industrial electrical equipment
  • tester, motors and controls
  • tester, transformer
  • transformer accessories assembler
  • transformer assembler
  • transformer assembly clamper
  • transformer assembly coil clamper
  • transformer builder
  • transformer coil winder
  • transformer core assembler
  • transformer core lapper
  • transformer core maker
  • transformer core stacker
  • transformer department lead hand
  • transformer fitter
  • transformer fitter-wirer
  • transformer gas detector relay assembler
  • transformer inspector
  • transformer maker
  • transformer subassembler
  • transformer tapgear assembler
  • transformer tester
  • transformer winder
  • undercutting machine operator – industrial electrical equipment
  • winder, AC (alternating current) and DC (direct current) armatures
  • winder, AC and DC armatures
  • winder, large transformer coils
  • windings inspector – large electric motors manufacturing
  • wireman/woman – industrial electrical equipmentwireman – industrial electrical equipment, wirewoman – industrial electrical equipment
  • wireperson, electrical switchgear
  • wirer, electrical switchgear panels
  • wirer/woman – industrial electrical equipment


  • Assemblers and inspectors, electrical appliance, apparatus and equipment manufacturing (9524)
  • Electrical mechanics (7333)
  • Electrical technicians who test heavy-duty electric motors, transformers or other industrial electrical equipment (See 2241 Electrical and electronics engineering technologists and technicians)
  • Supervisors, electrical products manufacturing (9223)


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