In summary: Continuous output covers sustained loads; surge covers brief startup demand from motors and compressors.
What each rating actually measures
Continuous output is the power level a station's inverter can sustain indefinitely under steady load. Surge, or peak/startup, output is a much higher power level the inverter can supply only briefly -- milliseconds to a few seconds -- to handle the initial current spike that motors, compressors and pumps draw when they switch on.
Why motor-driven appliances are the risk case
A refrigerator, sump pump or air compressor can draw two to three times its steady running watts for that brief startup moment -- a station whose continuous rating comfortably covers the appliance's running watts can still fail to start it if the surge rating is too low, causing the inverter to cut out.
Checking before you rely on it
Look up the specific appliance's startup or surge watts, not just its running watts, often listed on the nameplate or the manufacturer's spec sheet, sometimes separately from running watts, and compare that figure against the station's stated surge rating -- marketing boost-mode figures are sometimes load-specific and not equivalent to a flat continuous-output increase.
- Boost modes can be load-specific.
- Measure startup behavior where failure matters.
EXPLORE THE DATABASE
Related guides and tools
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CONTINUOUS OUTPUT VERSUS SURGE OUTPUT GUIDE QUESTIONS
Frequently asked questions
No. Use it to frame the decision, then verify decisive facts directly.