27) Which type of wiring system used in multistoried building?

28) Which is the number of earth leads shall be provided along with vertical runs of rising mains?

29) Which is the permissible power load in a sub circuit as per IE rule?

30) Which is the permissible voltage drop at the point of consumer on high and extra high voltage as per IE rule?

31) Which is the height of distribution boards to be fixed from floor level as per IE rule?