PART III | Person responsible for electrical installation |
12.—(1) For the purposes of regulations 16, 17(2), (4), (8) and (9) and 19, the person responsible for the electrical installation shall be as follows:| (a) | for an electrical installation other than a supply installation —| (i) | in the case of an electrical installation under the control of the consumer of electricity supplied through such electrical installation or a licensed electrical worker employed or appointed by him, the consumer; or | | (ii) | in any other case, the person having control of the electrical installation; and |
| | (b) | for a supply installation, the owner of such supply installation. |
| (2) The person responsible for the electrical installation shall at his own expense, employ or appoint a licensed electrical worker of the appropriate class to carry out proper maintenance on the electrical installation so that the electrical installation or any part thereof can be operated or used safely and efficiently without causing any undue interference to the transmission system. |
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| All apparatus, etc., to be of requisite standards |
13.—(1) The licensed electrical worker responsible for the installation of any electrical installation in, on, over or under any premises shall ensure that every wire, electricity cable, fitting and apparatus in such electrical installation complies with the requirements of the relevant Singapore Standard or with such other standard as the Authority may determine.| (2) The licensed electrical worker responsible for the installation of any electrical installation in, on, over or under any premises shall ensure that such electrical installation complies with the Singapore Standard SS 638 Code of Practice for Electrical Installations as at 15 November 2019 or with such other standard or code of practice as the Authority may determine. [S 755/2019 wef 15/11/2019] |
| (3) The licensed electrical worker responsible for the installation of any electrical installation in, on, over or under any premises shall, if such installation is to be used for building operations or works of engineering construction, ensure that such installation complies with the Singapore Standard SS 650 Code of Practice for Temporary Electrical Installations — Part 1: Construction and building sites as at 15 November 2019, or with such other standard or code of practice as the Authority may determine. [S 755/2019 wef 15/11/2019] |
| (4) The licensed electrical worker responsible for the installation of any electrical installation in, on, over or under any premises shall, if such installation is to be used for a trade-fair, a mini-fair, an exhibition or an amusement park or for decorative lighting for a festive, religious or commercial event, ensure that such installation complies with the Singapore Standard SS 650 Code of Practice for Temporary Electrical Installations — Part 2: Festive lighting, trade fairs, mini-fairs and exhibition sites as at 15 November 2019, or with such other standard or code of practice as the Authority may determine. [S 755/2019 wef 15/11/2019] |
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| Cable with aluminium conductors not to be used in domestic electrical installation |
| 14. No person shall use an electricity cable with aluminium conductors in any electrical installation used, whether wholly or partly, for domestic purposes. |
| Cable for concealed wiring in installation |
15.—(1) Where concealed wiring is installed in an electrical installation at a depth of less than 50 mm from the surface, no person shall use for such concealed wiring a non-metallic sheathed electricity cable or non-sheathed electricity cable without any metallic conduit or trunking protecting for such cable.(2) Where concealed wiring is installed in an electrical installation at a depth of 50 mm or more from the surface, a person may use for such concealed wiring without any mechanical protection —| (a) | a sheathed and polyvinylchloride insulated cable; or | | (b) | any other electricity cable approved by the Authority. |
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| (3) Where an electricity cable referred to in paragraph (1) or (2) is used in the manner described in that paragraph, the person using the electricity cable shall ensure that the electrical installation is controlled by a high-sensitivity direct-acting residual current circuit breaker. |
(4) No person shall make any alteration to any premises or carry out or cause to be carried out any work which would affect the electrical installation in the premises in such a manner that the subsequent use of such electrical installation might endanger any person or property unless he has —| (a) | taken due care to ascertain the existence of any electricity supply to the premises and the location of any concealed wiring within the premises; | | (b) | taken the necessary precautions to ensure that the alteration work will not cause any damage to the concealed wiring within the premises; and | | (c) | checked and verified that the residual current circuit breaker controlling the electrical installation can operate satisfactorily by switching off and on again the said residual current circuit breaker at the end of each day’s work or alteration to the premises and there is no sign of leakage of electricity in the premises. |
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| Authority may require use of high-sensitivity residual current circuit breaker |
| 16. The Authority may at any time require the use of a high-sensitivity residual current circuit breaker or the adoption of other safety measures for such electrical installations or class of electrical installations as it may determine, and the person responsible for such electrical installation shall comply with such requirement within such time and in such manner as the Authority may specify. |
17.—(1) The licensed electrical worker responsible for the installation of an electrical installation shall ensure that the general arrangement of every switchboard of that electrical installation shall, so far as is reasonably practicable, be such that —| (a) | all parts which need to be adjusted or handled in the course of operation or maintenance of the electrical installation are readily accessible; | | (b) | the course of all conductors can be readily traced; | | (c) | a clearly drawn diagram of the circuit of such electrical installation is displayed near the switchboard; | | (d) | all conductors not intended for connection to such electrical installation are separated or kept well apart and are readily distinguishable from those that form part of the electrical installation; and | | (e) | all bare conductors are so placed or protected as to prevent any danger arising from accidental contact with any of them. |
| (2) Where a switchboard of an electrical installation is not located in an area set apart as a switchroom, the person responsible for such electrical installation shall ensure that the switchboard is securely fenced or enclosed. |
| (3) No person other than a licensed electrical worker shall enter any part of an area set apart as a switchroom or any area which is fenced or enclosed in the manner stated in paragraph (2). |
| (4) The person responsible for the electrical installation shall ensure that a notice which complies with the requirements of paragraph (5) is placed in a conspicuous position near every switchboard. |
(5) The notice referred to in paragraph (4) shall —| (a) | be made of durable material; | | (b) | have the word “DANGER” and the operating voltage of the switchboard inscribed —| (i) | in block characters of at least 30 millimetres high and 5 millimetres wide; | | (ii) | in the English, Malay, Chinese and Tamil languages; and | | (iii) | in black against a yellow background; and |
| | (c) | be maintained in a clear and legible condition at all times. |
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(6) The licensed electrical worker responsible for the installation of an electrical installation shall ensure that —| (a) | all apparatuses pertaining to any switchboard of the electrical installation that must be handled in the course of operation or maintenance of the electrical installation are, so far as is reasonably practicable, placed or arranged so that the apparatuses can be operated from a working platform of the switchboard; and | | (b) | all measuring instruments and indicators connected with the apparatuses are, so far as is reasonably practicable, placed so that the measuring instruments and indicators can be observed from the working platform. |
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| (7) If the apparatuses, measuring instruments and indicators referred to in paragraph (6) are to be operated or observed from any other place, the licensed electrical worker referred to in that paragraph shall take adequate precautions to prevent danger. |
| (8) The person responsible for an electrical installation shall provide either a working platform for the switchboard of such electrical installation or a passage leading thereto. |
(9) The person referred to in paragraph (8) shall ensure that the working platform or passage referred to in that paragraph is —| (a) | of sound construction and has a firm and even floor; | | (b) | of adequate height and width to facilitate the safe operation or maintenance of the switchboard; and | | (c) | properly maintained and kept free from any obstruction. |
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| (10) The licensed electrical worker responsible for the installation of any electrical installation shall ensure that there is adequate clear space around every outer edge of the front, sides and back of the switchboard of the installation to enable the safe operation, inspection, testing and maintenance of the installation. |
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18. The licensed electrical worker responsible for the installation of an electrical installation which has a high voltage switchboard shall ensure that —| (a) | every high voltage conductor of such switchboard which is within touching distance of a person standing on a working platform of such switchboard or a passage leading thereto is so placed or protected as to prevent danger from arising; | | (b) | all metal cases of every apparatus, device, indicator and other instrument of such switchboard which is capable of being operated at high voltage are earthed; and | | (c) | all metal handles of every high voltage switch of such switchboard, and, where necessary to prevent danger from arising, all metal gears for operating the switch of such switchboard, are earthed. |
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| Adequate lighting where apparatus installed |
| 19. The person responsible for an electrical installation shall provide adequate lighting in every place where an apparatus of such electrical installation is installed if periodic servicing is required to be carried out on such apparatus. |
20.—(1) When installing an auto-transformer in an electrical installation, a licensed electrical worker shall take suitable measures to ensure that —| (a) | the lower voltage system in such auto-transformer will not be accidentally charged above its designated voltage during the use of such auto-transformer by leakage from or contact with the higher voltage system of the electrical installation; and | | (b) | the voltage between any part of the lower voltage winding of such auto-transformer and Earth shall not, at any time during the use of such auto-transformer, exceed the voltage between the terminals of the lower voltage winding of such auto-transformer. |
(2) No person shall use an auto-transformer to supply electricity to —| (a) | a socket-outlet; | | (b) | a portable appliance, unless the auto-transformer is contained therein; | | (c) | an electric toy; or | | (d) | any extra-low voltage circuit. |
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| Instructions for treatment of electric shock |
21.—(1) A consumer of electricity supplied to —| (a) | any premises which come within the meaning of “factory” given by section 5 of the Workplace Safety and Health Act 2006; [S 276/2023 wef 11/05/2023] | | (b) | any premises where electricity is generated, transformed or used at high voltages; | | (c) | any premises where an electrical installation which is not exempted from an electrical installation licence under section 71 of the Act is placed or installed; and | | (d) | such other premises as the Authority may direct, |
| shall post and maintain in a conspicuous part of the premises instructions in the English language and in either the Malay, Chinese or Indian language, as to the proper mode of treating persons suffering from electric shock. |
| (2) The consumer of electricity supplied to premises referred to in paragraph (1) shall ensure that all persons employed therein or who are otherwise there with his authority or permission understand and are familiar with the instructions referred to in that paragraph. |
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| Supply installation to be operated and used safely |
22.—(1) No person shall operate or use, or permit the operation or use of, any supply installation in any premises in a manner that is likely to cause any danger to the public.| (2) If the Authority considers that the operation or use of any supply installation in any premises is likely to cause any danger to the public, the Authority may by notice in writing require the person operating or using, or permitting the operation or use of, the supply installation to cease the operation or use, or to prevent the operation or use, as the case may be, of the supply installation. |
| (3) If the notice referred to in paragraph (2) is not complied with, the Authority may switch the supply installation off, or otherwise disable the operation of the supply installation. |
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