An AC Distribution Board, also known as an AC Distribution Panel or AC Distribution Box, is an essential component of electrical installations used to distribute alternating current (AC) power from a main power source to various electrical circuits and loads within a building or. An AC Distribution Board, also known as an AC Distribution Panel or AC Distribution Box, is an essential component of electrical installations used to distribute alternating current (AC) power from a main power source to various electrical circuits and loads within a building or. The Air Conditioning Distribution Box is a critical electrical component that centralizes power distribution for cooling systems while providing protection and ease of maintenance. This article explains what a distribution box does, typical configurations, sizing guidelines, installation. A distribution box is an important electrical device mainly used for the distribution and control of electric energy in a power system. It transmits electric energy from the power supply to various electrical equipment through cables or wires, ensuring the normal operation of the power system. In the AC power system, as an important part of the power equipment, the AC distribution box mainly plays the following roles: Power distribution: The AC power distribution box distributes the high-voltage AC power from the. There is no definite line between transmission and distribution according to voltage or bulk capacity. The AC Distribution System is.