The main switch, or main breaker, controls the entire electrical supply to the distribution box. It's typically rated for the maximum current capacity of the electrical. Choose the right box based on environment (indoor/outdoor), load capacity, and durability. Check for proper IP/NEMA ratings and material quality. Ensure safe placement: install in dry, accessible areas with good ventilation and at appropriate height (typically ~1. 3 ) To protect against electrical hazards, live parts in switchboard construction must be shielded by. A distribution box, or DB box, is a circuit breaker enclosure. Circuit. This guide will walk you through the most common distribution box types, their functions, and how to choose the right one for your specific needs. Main Distribution Board (MDB) 2.
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