According to nature of current, distribution system may be classified as (a) d.c. distribution system (b) a.c. distribution system. Now-a-days, a.c. system is universally adopted for distribution of electric power as it is simpler and more economical than direct current method.

240 volt systems and 120 volt outlets Most modern North American homes are wired to receive 240 volts from the transformer, and through the use of split-phase electrical power, can have both 120 volt receptacles and 240 volt receptacles. The 120 volts is typically used for lighting and most wall outlets.

The Electric Grid There are three main steps in the process of getting electricity to a home or business: generation, transmission, and distribution. Generation refers to the process of converting energy into electricity.

A distribution system originates at a distribution substation and includes the lines, poles, transformers and other equipment needed to deliver electric power to the customer at the required voltages. Customers are classed as: Industrial Customer. Commercial Customer.