According to the Lavricables website, about the Grand PC:
10 cores of 5N solid silver wire AWG28 are used for Active line and 10 cores for Neutral in order to transfer AC voltage.
This converts to about 18 gauge, which is not near rated for a normal 15 amp USA 115V circuit. Maybe fine for some equipment at Europe’s higher voltage, but I’m not sure about their codes.
So please be careful with the Lavricables PC for anything that draws significant current.