The inverter, sold for 3kW, is not powerful enough for a 3kW motor. Depending on the dimensions of the user's manual, it can only be a 2.2 kW maximum. The documentation provided is in Chinese and does not match to the product. An English version of the user's manual provided by the seller does not match either. Aliexpress offered to send it back for a refund, but the customs fees would have remain my charge. If I had accepted I would no longer have had an inverter but would have paid 50€ for customs duties: a scam. Seller and item to avoid except if you buy a 3kW inverter to power a 1kW motor. Videos which demonstrate thes conclusions are available and will be uploaded on Youtube. Search for: "fake 3kW Aliexpress Chinese inverter".