MDD.

According to the "Electricity (Wiring) Regulations", owners of electrical installations are required to regularly inspect, test and obtain certificates for electrical installations. For fixed electrical installations in general residential or commercial premises, if their allowable load exceeds 100 amperes, the installations should be inspected every 5 years and a certificate must be obtained. The periodic test certificate (Form WR2) must be submitted to the Electrical and Mechanical Services Department for endorsement. Please note that electrical engineering (including inspection, maintenance, repairs, etc.) must be carried out by a registered electrical contractor (REC).