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Question

The main switch at the distribution board, used to switch on or off the mains is the

A
Single pole switch
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B
Double pole switch
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C
Both
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D
None
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Solution

The correct option is B Double pole switch
The main switch at the distribution board, used to switch on or off the mains is the double pole switch. The dual control switch used in staircase etc are also the double pole switch of special kind.

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