Introduction section1: general requirements

POINT OF SUPPLY

1. 
   The point of supply which defines the boundary of DEWA equipment and is where electricity is made available to the consumer shall be decided by DEWA. Point of supply shall be made available only at one location, within a plot/ project, unless otherwise approved by DEWA.
   

2. 
   The circuit breaker/s and/or main distribution board/s provided at the incoming point of supply shall be designed and rated to suit particular applications and complying with Regulations specified under section 4 and 7.
   

3. 
   The main circuit breaker/s at the point of supply (main switch) shall be marked as such and identifiable from other breakers to operate easily in an emergency. Where more than one incoming supply is available, in any premises, each 'Main Switch' shall be marked to indicate which installation or section of the installation it controls.
   
4. 
   Where a main L.V. distribution panel is connected directly to the low voltage side of the transformer, the main incomer circuit breaker proposed in the L.V. panel is recommended to be totally withdraw able type 4-Pole type Air Circuit Breaker.
   

5. 
   Where consumer's Main Low Voltage distribution board/panel is connected to DEWA's two or more distribution transformers, separate bus-sections with mechanically and electrically interlocked bus-section breakers/isolators (4-pole) shall be provided.
   

6. 
   All incoming cable terminations/ Live connections in metering cabinets and other main and sub-main distribution boards shall be adequately shrouded and insulated.
   

7. 
   Consumer's main & sub-main Panels/Distribution Board/s and final distribution boards shall all be installed in locations to which access is available at all times. A minimum space of 1500 mm shall be provided in the front and 750 mm on the sides, to permit safe operation, inspection, testing and maintenance, for cubicle type panels/switch boards. Panels with rear access doors shall have, in addition, a minimum space of 750 mm in the rear. The mounting height (to the top of the board/s) shall normally be 2 meters from the ground/floor level.
   

8. 
   All Main Electrical switch rooms and other Sub electrical switch rooms in which capacitor banks are installed shall be air-conditioned. The non-air-conditioned electrical rooms shall be adequately ventilated and provided with necessary heavy duty exhaust fan/s and fire resistant/metallic louvered door/s, as applicable.
   

9. 
   Door opening of electrical switch room shall be arranged outwards, be kept free from obstructions and shall not be open towards driveway, staircase, steps, etc.
   

10. 
    Adequate level of illumination shall be provided to facilitate safe operation at all times. All electrical rooms shall be provided with safety and emergency fittings as specified under section 4 of this regulation
    

11. 
    Incoming supply cable/s to the consumer's main Distribution Board/s shall be totally segregated and identified from the consumer's cables.
    

12. 
    Termination of incoming supply cable at the Consumer's Metering Cabinet/Main Distribution Board (MDB) shall be carried out by consumer's contractor, in accordance with section 7 of this Regulation.
    

13. 
    Electrical switch room shall not be located below/ beside wet areas such as Bathrooms, Toilet, kitchen, Pantry or carry any water pipe installation within /on its wall.
    

14. 
    Main electrical switch room shall be located near to the plot entrance, in ground floor area. Wherever substation is provided within the building, the main electrical switch room shall be provided in the ground floor area adjacent to transformer room .The dimensional layout of electrical switch room to be maintained as per Appendix-3 of this regulation.
    

15. 
    The electrical switch room shall not be used for Storage of any equipment, material etc.
    

3. 
   
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