JULY 12.] THE NEW ZEALAND GAZETTE. 2399

DIVISION I.-GENERAL.

PART I.-APPLICATION AND MODIFICATION OF AND EXEMPTIONS FROM REGULATIONS.

4. These regulations shall apply to all electrical installations connected with any source of supply of electrical energy operated under the authority of a license granted under the Public Works Amendment Act, 1911, or any other Act (and whether granted before or after the coming into force of these regulations), and to all electrical installations for the installing of which such a license is required (and whether granted before or after the coming into force of these regulations), but save as provided in the Electrical Supply Regulations, 1927, nothing herein shall apply to any generating plant which is subject to those regulations.

5. (1) It shall be a condition of every license granted under the Public Works Amendment Act, 1911, or any other Act (and whether granted before or after the coming into force of these regulations) by which any electrical supply authority is empowered to supply electrical energy to any consumer, that such supply authority shall not connect with its electric lines or permit any other person to connect with such lines any new installation on the consumer's premises unless and until such installation has been inspected and tested, and certified pursuant to Regulations 283 and 284 hereof.

(2) It shall also be a conditions of every such license that the electrical supply authority shall not continue to supply electrical energy to any existing installation connected with the supply authority's electric lines, or to supply electrical energy to any other existing installation if such installation or any part thereof is not reasonably free from electrical hazard, and such work in accordance with these regulations as such electrical supply authority directs is not done to render such installation or such part reasonably so free : Provided that it shall not be necessary for the supply authority to require strict compliance with these regulations in the doing of any such work if it is satisfied that such compliance would involve unreasonable expenditure and that the installation can otherwise be rendered reasonably free from electrical hazard.

(3) It shall not be necessary until six months after the commencement of these regulations for the supply authority to insist on the use of any materials necessary to make any nstallation comply with the requirements of these regulations if such materials are not in general use or are not readily procurable in New Zealand.

6. In any case where the electrical supply authority is also a consumer of the electrical energy supplied by it, the conditions imposed by the last preceding regulation shall apply to it in its capacity as supply authority as if it were supplying electricity to some other consumer than itself, but in such case the Chief Electrical Engineer or some person appointed by him in writing in that behalf shall have and may exercise the power to inspect, test, and certify mentioned in sub-clause (1) of the last preceding regulation and the dispensing-powers conferred by subclauses (2) and (3) of that regulation.

7. Where a supply authority changes over from one voltage or system to another, the Minister may, by notice published in the Gazette, make such modification as may be specified in such notice of these regulations in their application to the reconditioning of installations for the purposes of such change-over.

8. The Minister may from time to time, by notice in the Gazette, approve methods or types of construction or materials not specially provided for in these regulations, and impose such conditions as he deems necessary with respect to the use thereof.

9. (1) In any case where the Chief Electrical Engineer, upon application being made to him in writing by any person proposing to make any new installation, is satisfied that strict compliance with these regulations would involve expenditure out of proportion to the degree of freedom from electrical hazard to be secured by such compliance he may modify any such requirements, if satisfied that reasonable freedom from electrical hazard can otherwise be secured.

(2) Every such application shall be accompanied by a full statement of the reasons why such modification is desired and of the nature thereof, and by a certificate by the supply authority's engineer that the application is a reasonable one and that in his opinion such modification will not lead to serious increase in the electrical hazard.

(3) In granting any such modification the Chief Electrical Engineer shall specify what special work (if any) he requires to be done to render the installation reasonably free from electrical hazard.

PART II.-PERMITS FOR WIRING-WORK.

10. Save as provided in Regulations 13 and 14 hereof, no wiring-work shall be commenced until a written permit therefor has been obtained from the electrical supply authority.

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11. (1) A supply authority may grant permits for temporary wiring.

(2) All such wiring shall be done on porcelain cleats or knob insulators, or in such other manner as may be approved in any particular case by the supply authority's engineer.

(3) The wiring shall be kept clear of any inflammable materials, and shall be so supported as to be free from risk of mechanical injury or of interference by unauthorized persons.

(4) Joints of opposite polarity shall be kept at least 6 in. apart, and all joints shall be mechanically and electrically sound, and where rubber insulated wires are used they shall be adequately insulated with rubber and adhesive tape.

(5) Temporary wiring shall not be connected to permanent wiring except at the switchboard, and each circuit shall be controlled by a switch and fuse. A final subcircuit for lighting shall not carry more than 15 amperes.

(6) Temporary wiring shall not be connected with the source of supply until it has been inspected and passed by an authorized Inspector as having been installed in accordance with the requirements of this regulation and of the permit.

12. (1) No permit for temporary wiring shall be granted for any longer period than one month after the date on which such wiring is connected to the source of supply.

(2) On the expiration of the period for which a permit for temporary wiring is granted a further such permit may be granted for a period not exceeding one month, but the total period during which temporary wiring may be connected to the source of supply under the authority of successive permits shall not exceed twelve months from the date on which it was first connected.

13. In any case of emergency due to a breakdown or other accident any person authorized pursuant to the Electrical Wiremen's Registration Act, 1925, to do electrical wiring-work may, without obtaining a permit as required by these regulations, begin any work necessary to repair the installation, but application for such a permit must be made to the supply authority within twenty-four hours after such work is begun.

14. In any case where an electrical supply authority is also the consumer of the electrical energy supplied by it, or is the contractor for any electrical-wiring work, the Chief Electrical Engineer or any person authorized by him in writing in that behalf shall, unless the Minister otherwise directs, exercise and perform the powers, functions, and duties con- ferred or imposed on the electrical supply authority as such by the foregoing provisions of this Part of these regulations.

DIVISION II.-RULES TO BE OBSERVED IN THE PERMANENT WIRING OF PREMISES AND THE INSTALLATION OF FITTINGS, APPLIANCES AND OTHER ELECTRICAL APPARATUS.

PART III.-ELECTRICAL PLANT.-GENERATING, STORAGE, AND TRANSFORMING.

GENERATING PLANT.

DYNAMOS AND ALTERNATORS.

15. Where an electric supply is generated upon the consumer's premises, the generators, except in the case of extra-low-pressure plant having a capacity not exceeding 5 kilowatts, shall conform in all respects to the British Standard Specification applicable to such machines.

SITUATION OF GENERATING PLANT.

16. (1) Generators other than flame-proof, forced-draught, induced-draught, or pipe-ventilated machines shall be placed in well-ventilated rooms where inflammable or explosive dust or gases cannot accumulate. In situations where inflammable or explosive materials are stored or handled generators may be placed only if adequately protected.

(2) Generators shall be placed in positions in which they are not exposed to risk of mechanical injury, or to damage from water, steam, or oil.

(3) Terminals of generators shall be so guarded that they cannot be accidentally touched or short-circuited.

17. No unprotected woodwork, other than hardwood bearers, or any combustible material shall be within a distance of 12 in. (measured horizontally) from or within 4 ft. (measured vertically) above or below the generators.