What are the main types of distribution boxes? Common types include indoor distribution boxes, outdoor distribution boxes, metal distribution boxes, plastic distribution boxes, wall-mounted boxes, and floor-standing boxes. It is a vital part and central hub of any electrical system. The hub distributes electrical power from a single input source to various circuits throughout a. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. We'll explain what they are, the different panel types you'll encounter, NEC 408 requirements that govern their installation, and common applications for each type. From powering homes and industrial facilities to supporting medium-voltage infrastructure, these enclosures ensure safe, efficient, and reliable power distribution. Whether it's a small electrical. From residential 100-amp panels to massive 600 amp main distribution panels in commercial facilities, this comprehensive guide will help you understand distribution board types, sizing calculations, and installation requirements to make informed decisions about your electrical infrastructure. We also highlight how reliable manufacturers like NUOMAK support stable, compliant, and cost-effective power distribution.