Electrical installations and support

Electrical Works by Customer: Steps & Requirements

The following table shows the connection fee without CEM work:

 

Non Residential:

Original subscribed demand

Required subscribed demand

6.9kVA
(1x32A)

11.5kVA
(1x50A)

13.8kVA
(3x20A)

20.7kVA
(3x32A)

34.5kVA
(3x50A)

3.4kVA
(1x16A)

MOP 520

MOP 1,215

MOP 1,560

MOP 2,600

MOP 4,680

6.9kVA
(1x32A)

 

MOP 695

MOP 1,040

MOP 2,080

MOP 4,160

11.5kVA
(1x50A)

 

 

MOP 345

MOP 1,385

MOP 3,465

13.8kVA
(3x20A)

 

 

 

MOP 1,040

MOP 3,120

20.7kVA
(3x32A)

 

 

 

 

MOP 2,080

 

Residential:

Original subscribed demand

Required subscribed demand

13.8kVA
(3x20A)

20.7kVA
(3x32A)

34.5kVA
(3x50A)

3.4kVA
(1x16A)

MOP 345

MOP 1,385

MOP 3,465

6.9kVA
(1x32A)

MOP 345

MOP 1,385

MOP 3,465

11.5kVA
(1x50A)

MOP 345

MOP 1,385

MOP 3,465

13.8kVA
(3x20A)

 

MOP 1,040

MOP 3,120

20.7kVA
(3x32A)

  

MOP 2,080

Remarks:

The above table is for reference only, the actual cost will be subjected to the connection charges notification letter.


Requirement of Cable and Meter Board (Panel):

Subscribed Demand

Cable size

Cable Color

 Meter Board / Panel

3.4kVA
(1x16A) 

3x6mm2

Brown, Blue and Yellow/Green

Meter board size (LxW)

300x300mm, 200x400mm

Meter box size (LxWxD)       

430x380x230mm,

300x540x230mm

6.9kVA
(1x32A)

3x10mm2

11.5kVA
(1x50A)

3x16mm2

13.8kVA
(3x20A)

5x16mm2

Brown, Black, Grey, Blue and Yellow/Green

Meter board size (LxW)                 

350x350mm, 250x500mm

Meter box size (LxWxD)         

430x380x230mm,

300x540x230mm

20.7kVA
(3x32A)

5x16mm2

34.5kVA

(3x50A)

5x16mm2

Remarks:

  1. The height of the meter: 1.0 - 1.7m from the ground to the display of the meter. The meter board (panel) must be installed in an accessible location for meter reading at any time.
  2. If the requested subscribed demand is higher than 34.5kVA, the metering system will be indirectly connected and CT chamber is required. The requirement of the metering box and CT chamber is according to CEM standard.
  3. The above requirement of cable and meter board (panel) is provided to electrical contractor's reference only. 
  4. It is recommended to hire an electrical contractor for the alternation job with  submission of the alternation proposal to CEM for verification.
  5. Please refer to “NCEM” for technical requirements in details.

 

 

Remarks:

  1. The above diagram is a three-phase direct connection.
  2. All the electrical installation specified in the above meter equipment connection diagram, including the meter board/panel, the cables before and after the meter, shall be responsible by the customers. While the meter and circuit breaker with subscribed demand 34.5kVA or below are under CEM's responsibility.
  3. CEM’s approval is required for unsealing meter, customer needs to complete all necessary metering job with informing CEM to reseal meters within 15 days.
  4. If no network alternation is involved, the validity of the application is 30 days.
  5. In case the designed capacity limit of the original communal electrical installation of the relevant building is reached at the time of application, customer shall hire an experienced electrical contractor to upgrade the communal electrical installation before applying for a change of subscribed demand.
  6. In case the installation of additional facilities is involved in the communal areas due to the application of changing subscribed demand, customer shall take the responsibility to post the upgrade work notice in conspicuous places of the building for 15 days before proceeding.
  7. Replacement of miniature circuit-breaker (MCB) rating next to the meter can only be performed by CEM.
  8. When applying for a three-phase meter, if there is no individual fuse inside CCL for the relevant premise, customer must install one and connect it with “electricity-to-meter” method.

 

 

 

* For application with no network alternation involved

 

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