Maintenance Checklist for PV Combiner Boxes: What to Inspect and When
PV combiner boxes require periodic maintenance to ensure optimal safety and performance. A consistent maintenance routine can prevent unexpected failures and increase the life of your solar system.
Monthly Checks
- Visually inspect for any physical damage or corrosion.
- Check for any loose or overheated wires and connectors.
Quarterly Tasks
- Test overcurrent protection devices (fuses, breakers) for functionality.
- Inspect surge protection devices (SPDs) and indicators.
- Check enclosure seals and IP ratings for signs of water ingress.
Annual Inspection
- Thermal imaging for hot spots or abnormal temperatures.
- Grounding and bonding continuity testing.
- String voltage and current measurements for performance benchmarking.
Conclusion
Routine maintenance ensures your PV combiner box stays reliable and secure, maximizing the return on your solar investment. Use this checklist as a guide to keep your system in top condition year-round.
