Extension Lead The Powermaster Cable Reel Cassette - 10 Amp 4 Gang is a blue cassette type reel with five metres of 1.00 flex and a plug top connected. It is suitable for appliances of 1200 watt and up, for example most domestic appliances such as TVs and hairdryers. The fuse complies with BS 1362 ASTA. No tools are necessary as the reel fits straight to the existing socket.