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Appendix 3: Information on electricity suppliers

Appendix 3 provides the following information in respect of the two electricity suppliers:

A.3.1 Brief of CLP's electricity supply system
A.3.2 CLP's contact information (address, telephone and fax)
A.3.3 Brief of HEC's electricity supply system
A.3.4 HEC's contact information (address, telephone and fax)
A.3.5 Typical U/G cable plan and O/H line alignment drawing
A.3.6 Typical colours/sizes/buried depths of U/G cables

CLP Power Hong Kong Limited (CLP)

A.3.1 Apart from the U/G cables and O/H lines in Hong Kong Island, Lamma Island and Apleichau, all U/G cables and O/H lines in Hong Kong are owned and operated by CLP. The CLP electricity supply system consists of extensive networks of U/G cables and O/H lines operating at 400kV, 132kV, 33kV, 11kV and 380/220V. Since CLP¡¦s major power stations are located far away from the load centres, O/H lines are widely used to carry the bulk of electricity to consumers. U/G cables are used to transmit and distribute electricity in urban and new town areas. Submarine cables are also used to deliver electricity to outlying islands.

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A.3.2 Details of U/G cables or O/H lines in the vicinity of works to be undertaken may be obtained from CLP at the following address -

CLP Power Hong Kong Limited 147 Argyle Street Kowloon

General enquiries and incident reporting regarding U/G cables or O/H lines can be made through the following contact numbers:

Office hours (08:30hrs - 17:00hrs Mon - Fri)		Tel. 2678 6704 Fax. 2678 6757
After office hours		Tel. 2678 7721 Fax. 2678 6368

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The Hongkong Electric Company Limited (HEC)

A.3.3 All U/G cables and O/H lines in Hong Kong Island, Lamma Island and Apleichau are owned and operated by HEC. Due to geographical reasons, HEC depends primarily on U/G cables and submarine cables to carry electricity generated at Lamma Island to consumers. Its voltage levels are similar but not identical to those of CLP, namely 275kV, 132kV, 22kV, 11kV and 380/220V. Although relying mainly on U/G cables, HEC does operate a small number of 132kV and 380V/220V O/H lines.

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A.3.4 Details of U/G cables or O/H lines in the vicinity of works to be undertaken may be obtained from HEC at the following address -

The Hongkong Electric Company Limited Hongkong Electric Centre 44 Kennedy Road Hong Kong

General enquiries and incident reporting regarding U/G cables or O/H lines can be made through the following contact numbers:

Office hours 08:45hrs - 17:15hrs on weekdays 08:45hrs - 12:00hrs on Saturdays
General enquires		Tel. 2814 3443 (24-hr hotline) Fax. 2871 0645
Emergency enquiries		Tel. 2814 3443 (24-hr hotline) Fax. 2843 3110 (office hours) Fax. 2510 7812 (after office hour)
Incident reporting		Tel. 2555 4000 (English 24-hr hotline) Tel. 2555 4999 (Chinese 24-hr hotline) Fax. 2555 6637

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A.3.5 Figure 2 - Typical CLP U/G cable plan

A.3.5 Figure 3 - Typical HEC U/G cable plan

A.3.5 Figure 4 - Typical CLP O/H line alignment drawing

A.3.5 Figure 5 - Typical HEC O/H line alignment drawing

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A.3.6 Table 2: Typical colours/sizes/buried depths of CLP and HEC U/G cables

Note: The table indicates approximate information only, actual dimensions vary with brands, year of manufacture and site conditions.

* Both CLP and HEC have already decommissioned 66kV electricity supply lines. However, abandoned 66kV U/G cables still exist underground.

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