UNSAFE household electrical appliances would be outlawed under legislation proposed yesterday to protect the public from faulty products and enhance safety. Under the proposals, laid out in a consultation paper released by the Electrical and Mechanical Services Department, suppliers would have to ensure that about 500 types of electrical products meet safety requirements and have a safety certificate. The department said it would propose a separate bill on standards for electrical plugs and adaptors, expected to take effect before the overall electrical-appliance standards legislation. The chief engineer of the department's legislation enforcement division, John Chan Hing-nin, said: ''Some electrical appliances on sale in Hong Kong are not up to internationally accepted safety standards and so pose a potential danger to the public. ''The idea of these proposals is to try to keep up with international practices by bringing in legislation to control the supply of these products.'' In October, the Consumer Council warned that more than 80 per cent of the electric plugs sold in Hong Kong were defective and potentially dangerous. Tests on 22 brands revealed that only four were up to international standards, while some were so bad that a person could be electrocuted plugging them into the wall. The chairman of the Hong Kong and Kowloon Electrical Appliances Merchants' Association, William Choi Chung-hung, said he welcomed the move to control standards. ''I believe most manufacturers will be happy to see this legislation because it should get rid of sub-standard suppliers and give the public confidence to go out and buy electrical appliances,'' he said. The proposed electrical appliance law is scheduled to be enacted in 1995, although there will be a 12-month grace period for manufacturers, importers, suppliers and consumers to make changes. Legislation introducing safety requirements for electrical appliances, plugs and adaptors would be the fifth and final phase of the Electricity Ordinance. A separate consultation paper on safety regulations for plugs and adaptors was due out this month, although the law-making process was expected to be faster than for electrical appliances. Under the proposed legislation, department officers will have the power to force a supplier of unsafe electrical appliances to withdraw all the products from the market. Offenders will also be liable to a $100,000 fine and one year in prison for a first offence and a $500,000 fine and two years in prison on a subsequent conviction. The consultation period ends on February 28.