MCQ

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ELECTRICAL WIRING

Q21. If the space behind the switchboard exceeds 75 centimetres in width, there shall be a passage-way from either end of the switchboard clear to a height of _______ that type of provision with every switchboard according to Rule-51 of Indian Electricity rule,1956.

Q22. According to BIS, the panel board and meter board are to be kept at a height of ________.