For a 25 m² area, a distribution box should include a main switch, separate circuits for lighting, sockets, and high-power appliances, with proper protection devices and compliance with standards.

Recommended Configuration

1. Main Switch: Install a main switch to control the entire electrical system, allowing quick shutdown for maintenance or emergencies .
2. Lighting Circuits: Allocate 1–2 dedicated circuits for lighting to ensure stable operation and prevent interference from other loads .
3. Socket Circuits: Provide separate circuits for general-purpose sockets, typically 1–2 circuits depending on the number of outlets and expected load .
4. High-Power Appliances: Assign dedicated circuits for appliances like air conditioners, water heaters, or electric stoves to prevent overloading .
5. Protection Devices: Use appropriate circuit breakers (1P, 1P+N, or 2P) for each circuit, and include surge protection to safeguard sensitive equipment .

Installation Considerations

• Box Selection: Choose a distribution box with sufficient space for wiring and future expansion. For a 25 m² area, a compact or mini distribution board is usually sufficient .
• Placement: Install the box in a dry, accessible location at approximately 1.5 meters height, ensuring good ventilation and compliance with IP/NEMA ratings .
• Wiring: Maintain neat cable management, proper insulation, and secure grounding. Ensure wire gauge matches the load requirements .
• Standards Compliance: Follow local electrical codes (NEC, IEC, or regional standards) and use UL/CE-certified components .
• Documentation: Label all circuits clearly and maintain a wiring diagram for future maintenance or upgrades .

Optional Enhancements

• Modular Design: Consider modular distribution boards to allow easy addition of circuits or upgrades in the future .
• Sub-Distribution: For slightly higher loads or multiple rooms, a sub-distribution panel can be added to manage specific areas efficiently . By following this configuration, a 25 m² space can have a safe, efficient, and standard-compliant electrical distribution system that accommodates current needs and allows for future expansion.