In summary, the requirements for the electricity meter box on the construction site involve multiple aspects such as safety performance, protection level, installation location, wiring specifications, rain and dust prevention, and regular inspections, aiming to ensure the. In summary, the requirements for the electricity meter box on the construction site involve multiple aspects such as safety performance, protection level, installation location, wiring specifications, rain and dust prevention, and regular inspections, aiming to ensure the. Primary distribution systems consist of feeders that deliver power from distribution substations to distribution transformers. A feeder usually begins with a feeder breaker at the distribution substation. Many feeders leave substation in a concrete ducts and are routed to a nearby pole. At this. These instructions define the areas in which assistance may be given to a primary customer to coordinate the customer's and DTE Electric systems, to increase the operating safety of high voltage equipment. A primary customer is one who takes service directly from DTE Electric primary lines (4800V. A construction power distribution box is an essential part of a construction site as it ensures that the power needs of all the equipment and machinery on the site are met. The search for an assignment-compliant, dependable solution should fulfill those usual requirements placed on cost optimization, efficiency, and time needs. At the same. The outgoing line from the low-voltage end of the transformer is 0. 4kV to the distribution cabinet (primary distribution cabinet), then the outgoing line is led to the distribution box (secondary distribution box) in each building, and finally the outgoing line is led to the distribution cabinet. A reliable construction site power connection is the foundation for safe workflows, predictable schedules, and the efficient use of electrically powered equipment.