For a distribution box, it specifically refers to half the sum of the lengths and widths of the box. Understanding this parameter is crucial for effectively placing internal components and ensuring proper wiring within the box. It is not to be. trial applications. The Mirage range of practical f outgoing devices. * For different colours and thickness, please r DETAILSDesign Distribution Box of one House and Calculation of Size of Main ELCB and branch Circuit MCB as following Load Detail. Power Supply is 430V (P-P), 230 (P-N), 50Hz. 6 for Non Continuous Load & 1 for Continuous Load for Each Equipment. The products and systems listed in this catalog are developed and manufactured using a certified quality management system in. The half perimeter is essentially half the total length of the perimeter of a closed geometric shape. Analyze the incoming line part: Determine the incoming line source of the distribution box and.