Electrical installations are a fundamental system of every home and are crucial for safety, functionality, and comfort. Proper design and implementation of installations reduce the risk of short circuits, fires, and inefficient energy consumption. This guide covers everything – from design, types of cables, distribution boards, to prices in KM and practical tips for implementation in Bosnia and Herzegovina.
Basic Components of Electrical Installations
- Main distribution boards
- Vertical and horizontal cable routes
- Sockets, switches, and lighting fixtures
- Protective devices: fuses, differential switches
- Earthing and surge protection systems
Types of Cables and Conductors
NYM Cables
- For indoor installation
- Flexible, temperature-resistant
- Price: 2 – 5 KM/m
PVC and Copper Cables
- For main distribution and outdoor installations
- Price: 5 – 10 KM/m
Phase and Neutral Conductors
- Standard 1.5–2.5 mm² for sockets
- 4–6 mm² for high load (boilers, water heaters)
Distribution Boards and Prices
- Main distribution board: 500 – 1,500 KM
- Sub-distribution boards: 200 – 500 KM
- Fuses and switches: 5 – 30 KM per piece
Sockets, Switches, and Lighting
- Standard socket: 20 – 40 KM
- Switch: 15 – 35 KM
- LED lighting: 50 – 150 KM per piece
- Ceiling light: 80 – 200 KM
Protective Devices
- Differential switches: 150 – 400 KM
- Fuses: 5 – 15 KM
- Earthing and surge protection: 200 – 600 KM
System Design
Design includes:
- Cable and socket plan by room
- Load calculation and power (kW)
- Selection of fuse and switch type
- Choice of lighting and energy-efficient devices
Installation and Implementation
- Cable installation through walls, floors, and channels
- Installation of distribution boards and fuses
- Voltage and earthing continuity testing
- Installation of switches, sockets, and lighting fixtures
Energy Efficiency and Smart Systems
- LED lighting and motion sensors
- Smart switches and thermostats
- Solar systems and electric vehicle chargers
- Automation and energy consumption monitoring
Electrical Installation Costs (150 m² house)
- Cables and conductors: 3,000 – 6,000 KM
- Sockets, switches, and lighting: 4,000 – 8,000 KM
- Distribution boards and protective devices: 2,500 – 5,000 KM
- Labors: 5,000 – 10,000 KM
Total: 14,500 – 29,000 KM
Most Common Mistakes
- Inadequate cable sizing
- Incorrect earthing
- Insufficient surge protection
- Poorly installed switches and sockets
- Non-compliance with electrical standards and norms
Tips for Implementation
- Plan the installation before finishing works
- Use cables and devices certified for the BiH market
- Test the system before closing walls
- Regularly service and check functionality
Conclusion
Electrical installations are a vital system of every home. A well-designed and implemented system guarantees safety, functionality, and comfort. Investing in quality materials and professional installation saves money in the long run and prevents problems, while smart systems enable modern control and energy efficiency of the home.