Which type of outlet accessory is suitable for double insulated appliances having P.V.C. or insulated body ?

30) Two pin sockets should not be used in domestic wiring unless the appliance to be connected is

31) A length of conductor which is having one or more cores insulated from each other is called as

32) Which tool is used to measure the size of the conductor ?

33) What is the advantage of standard conductors over solid conductors ?