Every distribution box undergoes stringent checks: Verify part accuracy, component fit/seating, correct assembly sequence, door latch/hinge function. Apply high voltage between conductors and ground/enclosure. Ensure no insulation breakdown or current leakage occurs. Today, electrical systems are essential for homes and industries. But what exactly is a power distribution box, and why is it so essential in our daily lives? The DB panel board controls the flow of electricity. Understanding its significance. A distribution box, also known as a power distribution box or electrical distribution box, is used to distribute electrical power safely to multiple circuits.