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 […]

How to calculate the size of MCBs while designing a circuit

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To decide the number and types of MCB/ ELCBs in your office/ home, you must note down the number of electrical equipment used in your premises. Then start dividing them into different electrical branches (on the basis of your wire size calculations and cost effectiveness). Example 02 — Click here   — For JOB Application, please mail at —   Example 01 For example, suppose one building has 8 rooms with following equipment in each room. Room-1 3 X 40 W Bulb (NC) 1 X 60 W F an (NC) Room-2 2 X 40 W Bulb (NC) 1 X […]