Commercial and industrial electrical works refer to installing, repairing, and maintaining electrical systems and equipment in commercial and industrial settings. These settings include buildings such as offices, factories, warehouses, hospitals, schools, and other facilities where electrical systems are used for lighting, heating, cooling, and other purposes.

Some of the common commercial and industrial electrical works include:

1. Electrical wiring and rewiring: This involves installing and repairing electrical wiring systems in buildings.
2. Lighting installations: This involves the installation of lighting fixtures, such as fluorescent and LED lights, and maintaining and repairing existing lighting systems.
3. Electrical panel installations and upgrades: This involves installing and upgrading electrical panels that control the distribution of electrical power in commercial and industrial buildings.
4. Electrical equipment installations: This includes the installation of electrical equipment, such as generators, transformers, and motors.
5. Electrical maintenance and repair: This involves inspecting, testing, and repairing electrical systems and equipment to ensure they operate correctly and safely.
6. Electrical safety inspections: This involves conducting regular inspections of electrical systems to ensure they meet safety regulations and standards.
7. Electrical system design: This involves the design of electrical systems for new buildings or the redesign of existing electrical systems.

Overall, commercial and industrial electrical works are critical to the smooth operation of businesses and facilities. Hiring experienced and qualified electricians is essential to ensure that these systems are installed and maintained correctly and safely.