A commercial building — an office, mall, hospital or factory — depends on a safe, reliable electrical system. Planning electrical works early, alongside civil design, avoids costly changes later.
1. Load assessment
List all loads: lighting, HVAC, lifts, pumps, IT, kitchens and process equipment. Apply diversity factors and allow for future growth to decide the sanctioned load and supply voltage.
2. Supply and substation
Larger buildings may need a high-tension supply with a transformer and substation. Coordinate early with the DISCOM for connection requirements and timelines.
3. Distribution design
- Main LT panel, sub-distribution boards and floor panels
- Correct cable sizing and routing
- Separate circuits for critical loads
- Space for future expansion
4. Protection and earthing
Use proper circuit breakers, residual current protection, surge protection and a well-designed earthing and lightning protection system as per applicable standards.
5. Backup and solar
Plan DG sets or UPS for critical loads, and consider rooftop solar to reduce energy costs.
6. Approvals, testing and handover
Electrical installations need inspection and approval from the electrical inspectorate where applicable. Test insulation, earthing and protection, and hand over as-built drawings and test reports.
Work with ATTPL Infra
See our projects and contact us. For power lines, read about transmission line construction. For rooftop solar, see ATTPL Solar.
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