The vacuum wasn't sucking so I put it on a card table while I disassembled hoses, connections, then flicking the switch on then off while trying different things, coming to the conclusion we need a new vacuum as this disturbed my installing door knobs on the new kitchen cabinets and I needed to move on with the kitchen renovation. I then cut the plugged in vac cord with a plastic handled scissors causing sparking at the scissors but the kitchen wall GFI outlet did not trip! Why? It's new. Black hot is on the brass screw that says Line; White common is on the other side, the silver screw; and the bare Ground wire is connected to the ground outlet screw.