For a pure sine 1500W and 3000W peak, there must be 12V accordingly (over 100A) so 50 or 70mm2 minimum. Except that here the terminals are females with a screw clamp side instead of external terminals to tighten M8 or M10. Furthermore, the two pre-assembled cables 10mm2 books are totally inadequate! No way to know if we are dealing with a single unit or double insulation, so how to connect or not the 220V earth? Apart from the short test track ... The off switch is not deportable therefore has less tinkering by opening the device means not to cut (except by cutting supply circuit).
I tested up to 800W no apparent concerns. I do not know if it is capable of delivering 1500W for some time without burning ... but a priori it has a CE label.
