The hot wire is always smooth. Examine the screw terminals on the new lamp socket. When wiring a lamp socket, the brass screw is for the hot wire. The silver or black (anything but brass ...

Electric water heaters found in most homes will have two heating elements, one at the top of the tank, and one at the bottom.

Double-check that the power is off before you ... Once you’ve removed the old switch by disconnecting the wire with pliers. You may have to strip some of the sheathing to expose the wires ...