Selecting the right power distribution board for your project is one of the most consequential decisions in any electrical installation. From light commercial fit-outs to large-scale industrial facilities, the wrong choice creates safety risks, operational disruptions, and costly retrofits. This guide breaks down the complete selection process — covering load calculation, low voltage power distribution board specifications, IEC compliance, environmental protection ratings, and supplier evaluation. Whether you are specifying a distribution cabinet for a manufacturing plant or a switch panel for a commercial building, this structured approach helps you match the right equipment to your project's exact demands, budget, and long-term goals.