| 83327 | Electrical engineering design services for the construction of long-distance water pipelines | |
| 83321 | Electrical engineering design services for the construction of non-residential buildings | |
| 83329 | Electrical engineering design services for the construction of outdoor recreation facilities | |
| 83329 | Electrical engineering design services for the construction of outdoor sports facilities | |
| 83324 | Electrical engineering design services for the construction of power plants | |
| 83323 | Electrical engineering design services for the construction of railways | |
| 83321 | Electrical engineering design services for the construction of residential buildings | |
| 83323 | Electrical engineering design services for the construction of roads | |
| 83323 | Electrical engineering design services for the construction of streets | |
| 83323 | Electrical engineering design services for the construction of subways | |
| 83323 | Electrical engineering design services for the construction of traffic control systems | |
| 83323 | Electrical engineering design services for the construction of tunnels | |
| 83323 | Electrical engineering design services for the construction of waterways | |
| 83327 | Electrical engineering design services for the construction of waterworks | |
| 83323 | Electrical engineering design services for transportation projects | |
| 83326 | Electrical engineering design services for waste management projects | |
| 83327 | Electrical engineering design services for water, sewage and drainage projects | |
| 87152 | Electrical equipment n.e.c., other, maintenance and repair of | |
| 54619 | Electrical equipment, heavy, installation of | |
| 83443 | Electrical equipment, testing and analysis of | |
| 54611 | Electrical fittings, installation of | |
| 87151 | Electrical heating equipment, domestic, repair of | |
| 87151 | Electrical household appliance repair | |
| 88765 | Electrical industrial furnaces and ovens manufacturing services | |
| 83310 | Electrical installation appraisal of agricultural buildings | |
| 83310 | Electrical installation appraisal of airfield runways | |
| 83310 | Electrical installation appraisal of bridges | |
| 83310 | Electrical installation appraisal of chemical and related facilities | |
| 83310 | Electrical installation appraisal of civil engineering works | |
| 83310 | Electrical installation appraisal of commercial buildings | |
| 83310 | Electrical installation appraisal of dams | |
| 83310 | Electrical installation appraisal of elevated highways | |
| 83310 | Electrical installation appraisal of harbours | |
| 83310 | Electrical installation appraisal of highways | |
| 83310 | Electrical installation appraisal of industrial buildings | |
| 83310 | Electrical installation appraisal of industrial plants and processes | |
| 83310 | Electrical installation appraisal of irrigation works | |
| 83310 | Electrical installation appraisal of local cables and related works | |
| 83310 | Electrical installation appraisal of local pipelines and related works | |
| 83310 | Electrical installation appraisal of long-distance communication lines | |