The wiring used to connect or interconnect pieces of equipment (sometimes referred to as "cords"). The main types of audio cabling are mic or instrument cabling, speaker cabling and power cabling. Mic cabling is light gauge (22-26 ga), is generally balanced, and may contain one or two pairs of conductors inside a foil or braid shield, plus a ground or drain wire. Instrument cabling consists of a single lead inside3 a foil or braid shield. Speaker cabling may be single pair or multipair. It is generally much heavier gauge (16ga or heavier)than mic or instrument cabling. It is virtually always unshielded. Power cabling (or "AC") carries electricity from house panels, outlets or a generator to the equipment