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Activity types

Activity types are the various kinds of work that electrical installation companies carry out.

When you register you company with the National Electrical Safety Board, you state what kinds of electrical installation work your electrical installation company carries out. These are called activity types. You can either register for all kinds of electrical installation work or just for certain kinds.

Low voltage activity types

Below are the kinds of work contained in the activity types involving electrical installation work in circuits supplied with a rated voltage below 1000 V AC and 1500 V DC, requiring at least an authorisation for low voltage, AL.

  • Residential buildings

Electrical installation work in installations or sub-installations for the use of electricity in residential buildings, including adjoining buildings and areas.

  • Public spaces

Electrical installation work in installations or sub-installations for the use of electricity in offices, restaurants, schools or other commercial or public places. (This activity type does not include electrical installation work covered by the Residential buildings activity type.)

  • Other installations for the use of electricity

Electrical installation work in installations or sub-installations for the use of electricity in street lighting, industry, agriculture, areas with a risk of fire, explosive atmospheres, medical locations and other installations or sub-installations for the use of electricity not covered by the activity types Residential buildings or Public spaces.

  • Electric power network - low voltage

Electrical installation work in installations or sub-installations for general distribution via concessionary grids.

  • Railway operation - low voltage

Electrical installation work in installations for railway, light rail, underground railway and trolley bus operation.

  • Electrical installations for generation of electric energy 

Electrical installation work in solar cell installations, battery storage, installations in hydroelectric and wind power, backup power, power supply to safety systems, and other installations and sub-installations for generation of electric energy.

 High voltage activity types

Below are the kinds of work contained in the activity types involving electrical installation work on circuits supplied with a rated voltage above 1000 V AC and 1500 V DC, requiring full authorisation, A.

  • Electric power network

Electrical installation work in installations or sub-installations for general distribution via concessionary grids.

  • Railway operation

Electrical installation work in railway installations.

  • Other installations

Electrical installation work in installations or sub-installations not covered by the activity types Electric power network or Railway operation.

Limited activity types

Below are the kinds of work contained in the activity types involving electrical installation work in circuits supplied with a rated voltage below 1000 V AC and 1500 V DC for which limited authorisation, B, is sufficient.

  • Machinery

Electrical installation work in existing final circuits consisting of

  • permanent connection and disconnection of machinery, motors and equipment, and
  • installation of light fittings, switches and sockets.
  • Heating, cooling and ventilation

Electrical installation work in existing final circuits consisting of

  • permanent connection and disconnection of heating, cooling and ventilation systems, and
  • installation of light fittings, switches and sockets.
  • Lifts, gates and escalators

Electrical installation work in existing final circuits consisting of

  • permanent connection and disconnection of lifts, gates and escalators, and
  • installation of light fittings, switches and sockets.

Special activity types

The following special activity types cover work on both low voltage and high voltage installations.

  • Cable laying

Electrical installation work in installations and sub-installations for the transmission of electricity via concessionary grids, limited to the following work:

  • laying underground cables, including installing the associated cable cabinets, posts, earth terminals, and installing longitudinal earth wires,
  • cable pulling and feeding of overhead cable, and
  • simultaneously laying underground cables belonging to nonconcessionary grids when carrying out installation work in accordance with the first paragraph.

The Cable laying activity type is exempt from the requirement to have a compliance officer. However, it is still subject to the other requirements relating to execution, the self-audit scheme and registration.

More information

For more information about activity types, see our manual "Electrical installations under the Electrical Saftey Act", section 8 (link below).

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Responsible: Anders Richert
Published: 2017-07-05
Updated: 2017-07-07