"I wanted to attach a mains cable to this 4 gang socket but it was only when I got it home I noticed a safety warning on the underside of this item that it is recommended to only use 3core cable i.e. live+neutral+earth cable as otherwise there is risk of over heating! The Screwfix website / catalogue description does not include this information & I asked the counter assistant to check the other masterplug re-wirable sockets including the 2 gang versions & they also only recommend using cable which contain live+neutral+earth wires or there is risk of overheating. Otherwise it would have been an ideal 4 gang socket. I only had live+neutral (blue+brown) wire mains lead that I wanted to attach to this 4 gang socket. I felt it was not worth the risk of a fire just for the sake of saving a few pounds."