Guides

10 Inverter Mistakes Homeowners Make (And How To Avoid Them)

From wrong sizing to bad wiringfix these mistakes to boost backup, safety, and battery life.

May 2024 6 min read

Key takeaways

  • Right size + proper cables = cooler, safer system
  • Surge protection and earthing protect electronics
  • Maintenance extends backup and battery life

Top Mistakes (And Fixes)

  1. Wrong Sizing: Always calculate peak load + surge. Add 20% headroom.
  2. Poor Ventilation: Keep 6–8 inches clearance and ensure airflow.
  3. Cheap Cables: Use proper gauge; avoid heat loss and voltage drop.
  4. No Surge Protection: Install SPDs and ensure proper earthing.
  5. Ignoring Battery Care: Regularly check terminals and electrolyte levels.
  6. Overloading Backup: Don’t run heat-heavy appliances together.
  7. Skipping Maintenance: Quarterly inspections extend lifespan.
  8. Bad Placement: Avoid damp, dusty, or sealed enclosures.
  9. No Monitoring: Use apps to track temperature, load, runtime.
  10. DIY Wiring: Hire certified professionals for safety.

Download our free sizing checklist to pick the right inverter the first time.

FAQ

How do I size my inverter?
Add all running loads + surge, then add 20% buffer.

Which cable should I use?
Follow manufacturer gauge charts based on length and current.

Do I need SPDs?
Yes, to protect from grid surges and lightning.