(Solved) The permissible voltage drop from supply terminal to any point on the wiring system should not exceed

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 Question :

The permissible voltage drop from supply terminal to any point on the wiring system should not exceed

A. 4 % + 1 volt

B. 3 % + 1 volt

C. 2 % + 1 volt

D. 1 % + 1 volt


Answer : C. 2% + 1 Volt

As per Indian Electricity rule, voltage drop (in lightening circuit of) wiring system should not exceed 2% + 1 volt.

Note :

  • Insulation resistance should be at least 1 Megaohm between two phases or phase and earth. 
  • Insulation of line should be designed in such a way that leakage current from line to earth should not be more than 1/5000 part or 0.02%. 


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