Pure sine vs modified: what to use where
When a modified-sine inverter is OK and when you should insist on pure sine.
Quick take
Use pure sine for anything sensitive or with a motor/compressor; modified sine is OK for simple resistive loads.
How to use the calculator
- Open the calculator linked below.
- Enter the numbers that match your setup.
- Use our rules of thumb to sanity-check the result.
Rules of thumb
- Avoid high-pressure washing; use soft brushes.
- Rinse with deionized water when possible.
- In dusty seasons, clean monthly for best output.