Section 20(2) in The Electricity (Supply) Act, 1948
(2)The Board may maintain shops and show-rooms for the display, sale or hire of fittings, wires, apparatus and machinery as aforesaid, conduct displays, exhibitions and demonstrations thereof, and generally do all things, including advertising, incidental to the sale and hire of such fittings, wires, apparatus and machinery and to the promotion and encouragement of the use of electricity.
