Current: The current flowing through the circuit is given by I = P / (V * PF). Considering these as variable values: P=10. 8, the calculated value (s) are given in table belowThe information provided in this document contains general descriptions, technical characteristics and/or recommendations related to products/solutions. This document is not intended as a substitute for a detailed study or operational and site-specific development or schematic plan. It is not to be. Every circuit must satisfy the fundamental protection equation: Ib ≤ In ≤ Iz This ensures the circuit can safely carry the design load, the MCB will protect against overload, and the cable won't overheat. Diversity acknowledges that not all lighting circuits operate at full load simultaneously:. Before we dive into calculations, let's get familiar with a few essentials: 1. Your Project's Total Power Demand This isn't just adding up wattages randomly. Do you really need the hair dryer, microwave, and vacuum running. Design 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. Select calculation type and enter known values to calculate electrical parameters using Ohm's Law and power formulas.