How many number of SPT and two way switches are required for the installation of godown wiring with 6 No. of lamps ?

23) Switch and accessory boxes need not be earthed if they are made up of

24) The electrical accessories used in wiring installation are classified according to their uses. In what classification of accessories, the ceiling rose will belong ?

25) In what classification of accessories, the distribution board will belong ?

26) As per BIS 1293:1988, the voltage rating is