How many wires typically come out from a transformer in an electric company?

The typical number of wires that come out from a transformer in an electric company is three. This configuration is primarily seen in three-phase electrical systems, which are commonly used in power distribution due to their efficiency and ability to balance loads.

In a three-phase system, the transformer has three output wires, each carrying voltage. These wires are often referred to as phases or phases A, B, and C. This arrangement allows for more power to be transmitted over the same amount of wire compared to a single-phase system, which only has two wires: one for the live connection and another for the return or neutral connection.

Additionally, in certain configurations, there may be a neutral wire present, which can sometimes result in four wires total. However, typically for the basic output from a transformer in a common three-phase system, three wires are used for the efficient transmission of electrical power, making this the correct answer.