99) The cross sectional area of copper conductor for power wiring shall be not less than :

100) The minimum size of aluminium conductor used in a power circuit is :

101) The clearance between the conductors of opposite polarity or phase and between the conductors shall be at least :

102) If the working voltage of an installation is 220 volts, then insulation tester rated voltage is :

103) As per IE rules, the voltage at the point of commencement of supply in the case of high or extra high voltage, shall not vary more than :