Tenaga Nasional Berhad

4.0 GROUP METERING FOR WHOLE CURRENT METERING
4.1 Location and height of meter position
i. In multi-tenanted premises for e.g. high rise buildings, residential office/shopping complexes, flatted
factories etc the meters shall be grouped at each floor of the tenants metering. There may be more than
one group of metering location at each floor.
ii.
iii.
iv.
In open commercial outlets for e.g. hawker centres, there shall be centralized metering where the meter
panel or box shall be rigidly and vertically mounted.
The individual meter shall be properly and eligibly labelled with permanent metal plate to indicate
clearly the meter supplying to the respective consumer.
The height from the top of the meter panel shall not exceed 2.1m.
4.2 Meter Panel
i. The meter panel can be of mild steel or other TNB approved material and of thickness not less than 1.5
mm.
ii.
iii.
iv.
Each meter panel shall accommodate a maximum of 5 meters only.
The recommended size and arrangement of the meters, cutouts, and neutral link is as shown in Appendix
27, Drawing No. 5A – 5C for single phase group metering and Appendix 28, Drawing No. 5D – 5F for
three phase group metering.
The holes for the termination wire to the meters shall have appropriate bushings to prevent the wires
from being damaged.
v. In the case of meter box with a cover, the metal plate on which the meters are mounted as well as the
cover shall have minimum two metal hinges to enable it to be swung open for at least 90 o .
vi.
The wiring arrangement shall follow:
• Single phase – Section 2 no. 2.5
• Three phase – Section 3 no. 3.5
TENAGA
NASIONAL B E R H A D
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