PV Combiner Box Installation: Best Practices for Safety and Efficiency
Site Preparation and Mounting
Choose shaded, accessible, flood-safe locations. Use vertical mounting on walls or frames.
Grounding and Bonding
Use copper ground wires and follow NEC/IEC bonding requirements for safety.
Wiring and Cable Management
- Use DC-rated solar cables.
- Secure and label cables clearly.
- Prevent sharp bends or tension on wires.
Commissioning Checklist
- Torque-check all terminals.
- Test insulation resistance.
- Verify SPD indicators.
- Perform thermal scan for hotspots.
Conclusion
A safe and correct installation is essential for protecting both the equipment and installers. Always follow the manufacturer and code guidelines.
