The average cost of installing a new distribution board is typically between £300 and £500. Understanding distribution box cost involves examining the comprehensive investment required for electrical distribution systems that serve as crucial infrastructure components in residential, commercial, and industrial settings. All material cost is populated. Enter the quantity for an estimate. Why? Consider a 345kV – 138kV station, if there's one breaker present. Buyers typically pay for a full panel replacement, including labor, materials, and permits. Key cost drivers include panel amperage, indoor vs outdoor location, wiring length, and whether a full panel upgrade or rerouting is needed.