(1) Main switch with overload and earth leakage protection shall be provided in the main switchboard for the control of entire electrical installation. All circuits shall be efficiently protected by circuit breakers of suitable capacity placed in positions easily accessible to the staff and in places where they are not likely to obstruct any passage or exits.
(2) The switch boards if they are accessible to the public and if they are in the ticket booths, shall be provided with proper lock-up cases with glass or metal front and the glass (unless of adequate thickness) shall be protected with a wire guard or alternatively boxes with lids and sides rendered fire proof by using suitable fire resistant material.
(3) All switches and circuit breakers of suitable capacity shall be so marked as to show clearly which circuit or lamps they control.