How to calculate the size of wire and mcbs for my house

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We received a query from one of our reader on how to calculate the size of MCB for my house. Since, the query is quite common we are here writing the solution.   QUERY – Dear Sir,   I am fond of your articles, i study them regularly. Sir i have a query regarding wiring of a 3 floor building. Each floor has 10.nos of shop, i have given main power to each shop 2000W, and backup power by 500w by seperate wiring through C/O in main Panel.   And at the DB end for Each Power line give 16A […]