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Failure of fuse or circuit breaker; earth leakage or overloading; and uneven distribution of phases or inadequate earth bonding will lead to damage of the electrical installation.
How to handle?
The repair and maintenance of electricity supply system should be undertaken by registered electrical contractors/workers. Name lists of registered electrical contractors/workers are available for reference at the Electrical and Mechanical Services Department’s (EMSD) Customer Services Office and website, as well as all District Offices of Home Affairs Department.
When the electrical work (including new installation, addition, alteration and repair) is completed, the qualified building services engineer and registered electrical contractor should inspect and test the electrical installations and certify that the installations are safe and comply with the safety requirements of the Electrical Ordinance stated in the Work Completion Certificate (Form WR1).
Electricity Ordinance (Cap 406) - Electrical and Mechanical Services Department (EMSD)