Electrical installation
What this code covers
Use this class for electrical installation when the main activity includes Installation of: and Electrical wiring and fittings. Check exclusions and nearby codes before applying it to a mixed activity.
Official NACE Rev. 2.1 labels and explanatory notes are imported from the source dataset. Plain-language explanations are shown separately so readers can compare interpretation with the source text.
No child codes; this is a class-level code.
- This class includes the installation, repair and maintenance of electrical systems in all types of buildings and civil engineering structures.
- installation of:
- electrical wiring and fittings
- telecommunication wiring
- construction of distribution lines for electricity and telecommunication, see 42.22
- construction of solar and wind energy farms, see 42.22
- construction of stations for distribution of electricity (e.g. for electric vehicles), see 42.22
- installation of lightning conductors, see 43.24
- Compare with 42.22, 43.24, 80.09 when the main activity overlaps another code.
- Check national equivalent caveats before using this code for local registration or filing workflows.
- If the main revenue activity appears in an exclusion, compare the alternative code before deciding.
Use this guide as classification support, not legal, tax, filing, or regulatory advice.
- - This class includes the installation, repair and maintenance of electrical systems in all types of buildings and civil engineering structures.
- - installation of:
- - electrical wiring and fittings
- - telecommunication wiring
- - computer network and cable television wiring, including fibre-optic
- - satellite dishes
- - lighting systems
- - fire alarms
- - burglar-alarm systems
- - street lighting and electrical signals
- - airport runway lighting
- - photovoltaic systems on buildings
- - power storage systems
- - installation of chargers for electric vehicles
- - connecting of electric appliances and household equipment, including baseboard heating
- - construction of distribution lines for electricity and telecommunication, see 42.22
- - construction of solar and wind energy farms, see 42.22
- - construction of stations for distribution of electricity (e.g. for electric vehicles), see 42.22
- - installation of lightning conductors, see 43.24
- - monitoring and remote monitoring of electronic security systems (e.g. burglar alarms and fire alarms, including their installation and maintenance), see 80.09
- - Installation of:
- - Electrical wiring and fittings
- - Telecommunication wiring
- - Computer network and cable television wiring, including fibre-optic
- - Construction of distribution lines for electricity and telecommunication
- - Construction of solar and wind energy farms
- - Construction of stations for distribution of electricity (e.g. for electric vehicles)
- - Installation of lightning conductors
What is NACE 43.21 used for?
Use NACE 43.21 for electrical installation when the main activity matches this scope: Use this class for electrical installation when the main activity includes Installation of: and Electrical wiring and fittings. Check exclusions and nearby codes before applying it to a mixed activity.
What are typical examples for 43.21?
Typical examples include Installation of:, Electrical wiring and fittings, and Telecommunication wiring.
When might 43.21 not be the right code?
Review another code when the activity is closer to construction of distribution lines for electricity and telecommunication, see 42.22 and construction of solar and wind energy farms, see 42.22.
Which codes should I compare before choosing 43.21?
Compare 43.21 with 42.22 Construction of utility projects for electricity and telecommunications, 43.24 Other construction installation, and 80.09 Security activities n.e.c. when the activity description is ambiguous.
Use this class for construction of utility projects for electricity and telecommunications when the main activity includes Construction of civil engineering structures for: and Long-distance and urban communication and power lines. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for other construction installation when the main activity includes Installation in buildings or other construction projects of: and Elevators, escalators, including stairlifts. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for security activities n.e.c. when the main activity includes Security consultants’ activities and Activities in an emergency call and service centre or alarm receiving centre (ARC). Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for plumbing, heat and air-conditioning installation when the main activity includes Installation, maintenance and repair of: and Heating systems (e.g. heat pumps, solar thermal collectors). Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for installation of insulation when the main activity includes Thermal insulation works (e.g. for pipes, boilers and ducts, interior or exterior, including cladding for insulation) and Sound insulation works. Check exclusions and nearby codes before applying it to a mixed activity.
Use this group for electrical, plumbing and other construction installation activities when the main activity includes Electrical installation and Plumbing, heat and air-conditioning installation. Check exclusions and nearby codes before applying it to a mixed activity.
Rev. 2 code 43.21 maps to the same Rev. 2.1 class 43.21 Electrical installation.
Official close match imported from NACE Rev. 2.1.
Low operational impact is expected, but systems should still store the target Rev. 2.1 version explicitly.
Confirm the target version field and update references where Rev. 2.1 is required.