Installing ceramic or porcelain tile is both an art and a science. Tile installers must know the composition of the tiles as well as how to lay them in place attractively. Besides the normal costs of labor and materials, a tile project's costs vary by the type of sub-flooring to be used as a foundation for the tile.
Three things can cause an EMI problem: A signal source creates some kind of noise, there is a transmission path for the noise, and/or there is a receiver sensitive enough to be distorted by the noise, as shown in Figure 1.
EMI can be caused two ways. It can be caused by direct physical contact with a conductor, called conducted EMI, or by induction (without physical contact), called radiated EMI. While nearly every electrical device creates emissions that can cause EMI, (i.e. electric motors, Bluetooth devices, cellphones) electric power cords and high-speed cabling are the most common sources of radiated EMI.