General Requirements for 11KV MetalClad Switchgear according to WAPDA Specification P-44:96

• The Switchgear shall be designed for indoor use only.
• each panel will be comprise of a draw-out type circuit breaker and shall be capable of being connected to a switch board on either side.
• All the associated equipment shall be self contained and self supporting.
• All live parts such as circuit breakers, bus bars, voltage transformers, current transformers etc. shall be enclosed within grounded metal compartments separated by grounded metal barriers. 
• Automatic shutters shall be provided to prevent exposure of live parts.
• Busbars & their connections shall be insulated.
• Mechanical interlocks shall be provided so as to ensure safe operation of the switchgear in the correct sequence.  
• All the secondary circuits, wiring & instruments etc., shall as far as possible be isolated by grounded metal barriers from all primary circuit elements with the exception of short lengths of wire such as at instrument transformer terminals.
• Switchgears shall be designed & manufactured to secure safety during operation, inspection, cleaning and maintenance & shall be so arranged as to minimize the risk of fire arising or spreading.