Salam all, this work done many months ago. But, only managed to share it in here now. ISSUE ON THE OLD DB? Old DB system only consist 1 elcb to accomodate all mcd going into end ciruit. This includes both Permanent (Lighting circuit and other permanent appliances) and portable (power circuit-Socket outlet) circuit. Picture below shows (Fig X) our old DB arrangement for our house electrical system, where protection device are allocated for each end circuit.. Fig 1: Old DB Additionally, protection devices on old DB also not properly arranged in order which causing a concern interm of safety and upgradability. Usually, DB system arrange in the order of Main switch, ELCB, MCB for lighting and MCB for power circuit. Fig 2: Old Single line diagram and DB arrangement ADDITIONAL LOAD REQUIREMENT However, as we plan to add more load in the system, 3 more Air Conditioning unit and 2 water heater, 1 circuit for Surveilance supply system and 1 circuit for cooker point and dryer. Therefore, the spa
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