The Secondary Distribution Box (SDB) receives power from Main Power Distribution box via an extender cable and provides a central power distribution to feed normal branch circuits to the electric floor modules through snap-on extender cables. Luanda, the capital city, is estimated to have some 8 million residents, and is followed by a limited number of secondary cities: Benguela/Lobito, Huambo, and Lubango, with Soyo and Cabinda as oil industry-focused cities. With this market concentration, it is very reasonable to appoint only one. Step-down transformers (distribution substation transformers) are used in distribution substations to reduce sub-transmission voltages to principal distribution voltages in the 2. 2 kV to 46 kV range for local distribution. Also called a distribution board, panel board, breaker panel, or electric panel, it is the central hub in an electrical system that divides incoming power into various subsidiary circuits. It is commonly used in homes, businesses, and industrial settings to control and protect electrical circuits. Safe and beautiful, waterproof box top suitable for field work.
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