As per DEWA’s Regulations, a single source of power connection shall be provided to each plot unless otherwise special arrangements have been made with DEWA.
Total connected loads equal to or greater than 1000 kVA are generally provided only through dedicated substations.
1.. Permanent Power Connection.
Developer shall liaise directly with DEWA for obtaining permanent power connections by completing all DEWA formalities as stipulated in DEWA Regulations. All related permanent power connection charges due to the Service Authorities shall be borne by the developer /lessee.
Any 11kV switchgear used shall comply with the latest edition of relevant IEC Standards or equivalent. Generally, switchgear which is metal clad and utilises withdrawable circuit breaker trucks having an integral earthing facility with essential foolproof interlocks shall conform to the requirements of DEWA. The technical specifications of 11kV switchgear and transformers supplied and installed by the developer shall be submitted to DEWA for approval prior to installation.
Relay setting calculation shall be submitted for DEWA approval prior to release of permanent power connection.
The terms and conditions for supply of electricity to the developer’s premises shall be as stipulated on DEWA’s composite application form (Appendix E, 18.).
1.. Temporary Power Requirement
Any temporary power supply for site services during construction shall be the responsibility of the developer.
NOC to DEWA shall be obtained from CED Services. A request which indicates the Plot Number, Client Name / Project Name, Consultant Name, Contractor Name and the power requirement in kW shall be sent via Email to CED Services.
1.. Additional Power Requirement
Any additional power requirement for existing facilities, the Developer/lessee shall directly approach DEWA after obtaining CED NOC. A request for this NOC indicating the Plot number,
Client name / Project name, Consultant name, Contractor name, additional power in kW shall be sent via Email to CED Services.
1.. Standby Power Supply
If Standby Generators are used, they shall be connected to the electrical distribution system only through an approved electrical and mechanical interlocking device, to prevent paralleling of generator supply to incoming mains.
EHS approval shall be obtained prior to the installation of Generator at site. (Refer to EHS Regulations)
1.. Earthing
Suitable earthing systems shall be designed and installed as per latest edition of relevant BS- EN Standards.
Neutral earthing arrangements shall be compatible with the existing earthing system of the DEWA electrical distribution network
1.. Lightning Protection
Suitable lightning protection system shall be designed and installed as per the latest edition of relevant BS-EN Standards. 1..8 Vector Group
The Vector Group of any power distribution transformers used shall conform to the requirements of the DEWA power system. 1..9 Power Factor Correction and Under Voltage Protection
The internal electrical distribution system at the developer’s premises shall comply with DEWA’s General Guidelines for Power Factor Correction and Under Voltage Protection (Appendix F, 18.).
Harmonic suppression equipment shall be installed at the load side if the types of load generate more harmonics than that is allowed as per the standard.
1..10 Lighting
Artificial lighting to habitable rooms shall be to Standards stipulated in IEE Wiring Regulations. Lighting installations at warehouses/industrial areas/offices and other common purpose areas shall comply with the requirements of relevant British Standards or equivalent Standards approved by DEWA. The lighting luminance levels shall be as indicated in Appendix B, 18..
All external area lighting shall be controlled via timer & photocell controlled circuit with over riding facility unless otherwise specified separately.
1..11 ROW
The services shall be installed as per the standard ROW. The details shall be obtained from the CED Drawing office (ced. [email protected])
On entranceways across the Authority’s service corridors, cables
shall be routed through uPVC Ducts and sufficient number of spare ducts shall be provided. Any existing cables in such areas shall be split ducted by the developer to the approval of CED/ DEWA.
All road crossings require the approval of DEWA. 15.4.12 General PCFC’s NOC Conditions
DEWA requires an NOC from PCFC, CED and this is usually issued subject to conditions and limitations. These are reproduced in Appendix C, 18.
1..1 Documentation Details. a) Building Permit
The following electrical drawings /documents shall form part of the Building Permit for modification / additional work on the existing leased facility. Please refer to the Building Regulations and Design Guidelines (Blue Code)
• Proposed lighting and small power layout of the extended /modified areas.
• Single line diagram and load schedule for the existing and proposed LV Distribution Network.
• Load schedule of all new proposed DB’s. • Layout of the machineries if any.
b) Digging Permit
NOC copy from services authority, key plan of the project indicates plot number, project number, client name, consultant name.
c) NOC to DEWA for release of permanent power
Plot Number, Project Number, Project Name, Client Name, Consultant Name.
d) NOC to DEWA for release of temporary power
Plot Number, Project Number, Project Name, Client Name, Consultant Name.
e) NOC to DEWA for Developers to liaise with DEWA
Plot Number, Project Number, Project Name, Client Name, Consultant Name.
f) Operational Fitness Certificate
An official request through our Building Permit Section with details of the facility shall be made. Operational Fitness Certificate shall be issued by EHS/CED upon satisfactory reports received from the respective departments.
1..1 Indemnity to the Authority
Though all efforts will be made by the Service Authority to maintain the quality and continuity of power supply, the Authority will assume no responsibility, in any manner whatsoever, for any consequences arising out of an unexpected degradation/failure of the power supply. If continuity of power is essential for the safe operation of the facility, it shall be the responsibility of the developer to provide suitable standby power supply arrangements in the event of rare mains supply failures
15.5 Water
Dubai Electricity and Water Authority is the supplier of water for all developments and unless otherwise specified, all water
related installations shall comply with the particular requirements of CED and the latest General Guidelines of (DEWA).
Any temporary water supply for site services during construction shall be the responsibility of the developer. NOC to DEWA shall be obtained from CED Services.
CED requires developers to provide an NOC from DEWA – Water
Department for any Building Permit application or demolition or modification. Shop Drawings for Water Services have also to be approved by DEWA and below is an outline of these processes. The developer should ascertain he is complying with the most up to date requirements by visiting DEWA’s Web Site.
1..1 New Building NOC
Application for building NOC shall be submitted by the Consultant / Contractor through the DEWA Web (www.dewa.gov.ae ). The details to be provided with the application are as follows: -
1. Plot No.
. Owner Name
. Type of building / project . No of storeys or No. of villas.
5. One location point – Northing and Easting co-ordinates. . For plots where planning is not available, proper drawing
with co-ordinates points shall be provided.
. Total quantity of domestic purpose water required for hrs.
8. Ground / underground water tank.
9. Overhead tank.
10. Fire tank requirement not to be included in the hr. requirement.
1.. Documents required to be attached with the NOC application: 1. Site plan / affection plan issued by CED.
. Setting out plan showing the location of the ground level or underground water tank position.
. Detailed plan showing the location of the sub-meters. All sub-meters should be placed in a proper, well lit and safely accessible location . Dedicated room for water meters is a
must, in case the water meters are not on the building roof (See Technical Requirements, Section 1).
. For large projects manual attachments (hand delivered) are to be delivered to the CSD (w) - NOC section. 1.. Revalidation of Building NOC
For revalidation of Building NOC, application is to be submitted by the Consultant / Contractor through the DEWA Web (www. dewa.gov.ae ). The same type of information as for a new NOC should be provided.
1.. Documents required to be attached with the NOC application: 1. Site plan / affection plan issued by CED.
. Copy of previous NOC issued to consultant.
. Setting out plan showing the location of the ground level or underground water tank position.
. Copy of DEWA- (W) approved shop drawings.
. Detailed plan showing the location of the sub-meters. All sub-meters should be placed in a proper well lit and easily accessible location.
Dedicated room for water meters is a must in case the water meters are not on the building roof.
. For large projects Manual attachments are to be delivered to the NOC section.
1.. For the Demolition of any Existing Building
The following documents shall be submitted to DEWA:
1. Letter of request for disconnection and Final bill, to Consumer Services.
. Site plan.
. A sketch showing limits of demolition area.
. Key plan.
1.. Shop Drawing Approval
The following documents shall be required to be submitted by Consultants/ Contractors to DEWA for Shop Drawings Approval.
Affection plan with DLTM coordinates (copy) NOC –water services plan (Copy)
Location and size of the main connection chamber.
Shop drawings stamped and signed by Consultant and Contractor with all details especially the following points.
• Water entry point and external connection.
• Water tanks (location, dimensions, area, and net capacity in Gal.)
1.. DEWA-W NOC Conditions
DEWA issues its NOC subject to a list of limitations and conditions, as shown below:
1. The position of pipelines marked in the drawings, is approximate and not to scale.
. The Contractor will be responsible for all the consequences of any damage to DEWA’s pipeline due to carelessness and will be charged as per Act ()/199 of Government of Dubai. And as per DEWA’s Rules and Regulations. . In case of breakage / leakage of main pipeline /
polyethylene pipe the contractor has to inform DEWA as soon as possible on Tel. 991 (hrs). The Contractor is not authorized to repair the polyethylene pipe or isolate DEWA’s main pipeline by closing the valve.
. The Contractor must obtain NOC for construction prior to commencement of any works with trial excavation details.
. Shop drawings of water plumbing layout along with layout of sub-meters and their locations, with meter room/cabinet details shall be approved by DEWA before commencement of any works (See Technical Requirements, Section 1). . The contractor shall ascertain exact location and depth
of DEWA’s water pipelines by trial excavation and take all necessary precautionary measures such as sheet piling, shoring etc, for deep excavation and loose ground strata.
. For buildings with basements and deep excavation, cross-section details along with shoring details showing the offset / clearance between the permanent shoring
and the temporary shoring shall be submitted before commencement of works.
8. No heavy machinery or vibrating equipment, temporary
structure like porta-cabin, building materials etc, should be placed above or near the pipeline and caving under the pipeline shall not be allowed. Septic tank, soak way or any permanent structure should be at least 1. m away from the pipeline.
9. Concrete thrust blocks behind Tee, bends & reducers etc, shall be provided and adequately protected during the works even if the same is not reflected in the drawings. 10. Water connection shall be provided only if water pipeline
network is available.
11. Please ensure 100% circulation of water in all storage tanks to avoid any health hazard.
1. It is mandatory to provide storage reservoirs for hrs. requirement of water for the premises use.
1. It is mandatory to provide ground level / underground water tank with a storage capacity of about % of total requirement mentioned.
1. The height of the entry point shall not be more than meters from the ground floor level.
1. Tank capacities (ground and overhead) shall be within the following limits:
Minimum Capacity = 1 X daily consumption + fire fighting reserve
Maximum capacity = X daily consumption + fire fighting reserve
1. In the case where underground / ground level reservoir is common for fire fighting and domestic purposes, water should be drawn out from a tapping which is 1 cm above the bottom level of the tank for both fire –fighting and domestic purposes.
1. Direct pumping of water from supply lines will not be allowed. Water must be pumped from underground / ground level reservoir only.
18. N.O.C is valid up to months only from the date of issue. Contractor must revalidate the N.O.C already issued to the consultant.
19. Copy of NOC to be available at site.
The above NOC conditions are for information only. Consultant/Contractor shall liaise with DEWA to obtain the latest NOC conditions.
15.6 Telecommunications
Unless otherwise specified separately, generally all Telecommunication related Installations shall comply with latest General Guidelines of local Authority (Etisalat and/or ‘du’) who would be providing the services.
Any temporary telecommunication services for site during construction shall be the responsibility of the developer. NOC to Etisalat/’du’ shall be obtained from CED Services.
Detailed Telephone System Drawings showing all points and single line diagrams for telephone, fax, internet, cable TV and fiber optic requirements of the buildings should be submitted at the Building Permit Application. These should comply with the Service Provider’s requirements and be accompanied by an NOC from such provider.