Well guys, the inverter was connected to a new 12-volt 100-ampere Hankook DC deep discharge battery and a 120-watt panel with a 20-ampere charge controller. The inverter powered the entire house and the refrigerator (an old one with an approximate 1600-volt start) remained unaffected in continuous connection, as well as the lights, etc. Somewhere I read that the fans work continuously, but I'm telling you that this is not true. They only work when needed and depending on the load they draw. I am very satisfied with the inverter, it provides a stable voltage and can actually handle up to 1500 volts, as indicated, which I measured with a meter and it doesn't have any issues. It is worth buying for the money it costs, I got it for 150€ and at this price, you won't find anything that provides 1500 volts and a clean sine wave. That's all from me