- Factories
- Production lines
- Manufacturing plants
- Shipyards
- Smelters
- Oil and gas refineries and platforms
- Mining operations
- Industrial construction sites
- Power stations
- Scientific research facilities
- Industrial installations of overcurrent protection
- Portable cables over 600 volts
- Electric-discharge lighting systems over 1,000 volts
- Motors, motor circuits, and controllers
- Capacitors, resistors, reactors, and storage batteries over 1,000 volts
- Switchgear and industrial control assemblies
- Electrode-type boilers
- Cranes and hoists
- Electric welders
- Industrial machinery