Some factors distinguish low-voltage wiring from wiring for higher voltage devices. Low-voltage wire is sometimes, but not always, composed of narrower gauge wires. This type of wire usually has a thinner sheathing or jacket. 12-gauge wire, for example, is utilised for both 120 V domestic devices and lower voltage landscape lighting.
Low-voltage wiring is insulated wiring with non-metallic sheathing that conducts electricity at 50 volts or less. Standard wall outlets found in rooms and corridors, on the other hand, are 120 V. In the household, low-voltage wire is widely used for thermostats, doorbells, TV cable, and network cable. Outside of the home, low-voltage cable is most commonly encountered with low-voltage landscape lighting systems.
Low-voltage wiring is not usually a safety hazard, although it can be. Low-voltage wire frequently interconnects with devices that carry greater voltages. Low-voltage wiring can also carry enough power to spark an electric arc. A single spark in contact with flammable or combustible liquids, solids, or gases can cause an explosion or a fire. Common types of low-voltage wiring around the home are: