Estimate recommended continuous inverter capacity from running load, surge load and headroom.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
Recommended continuous rating ≈ running load × headroom. Surge capability must also be checked for motors, compressors and other high-inrush loads.
For an 800 W continuous load with 25% headroom, target about 1000 W continuous capacity or more.
Electrical and energy calculations are not final designs by themselves. Load profile, conductor conditions, protection, efficiency and local codes must be considered together. Sorsana tools are intended for preliminary sizing and scenario comparison.
Starting power can be several times higher than normal running power for a short period.
Sensitive electronics, motors and some adapters may benefit from pure sine wave; follow equipment guidance.
Tell us if a calculation is unclear, incomplete or appears incorrect.