834
THE NEW ZEALAND GAZETTE.
[No. 36

License authorizing the Auckland City Council to erect Electric Lines in the City of Auckland.

LIVERPOOL, Governor.
ORDER IN COUNCIL.

At the Government Buildings at Wellington, this first day of March, 1915.

Present:
THE RIGHT HONOURABLE W. F. MASSEY, P.C., PRESIDING IN COUNCIL.

WHEREAS by section two of the Public Works Amendment Act, 1911, it is provided that no person shall lay, construct, put up, place, or use any electric line except under the authority of a license issued by the Governor in Council under that Act: And whereas the Auckland City Council (hereinafter referred to as “the said Council”) desires to erect electric lines along certain routes in portion of the Borough of Mount Eden and within the area of supply as defined in the Schedule hereto, and hereinafter called “the area of supply,” and it is expedient accordingly to issue a license in respect thereof under the said section:

Now, therefore, in pursuance and exercise of the powers conferred upon him by the said section, and of all other powers enabling him in that behalf, His Excellency the Governor of the Dominion of New Zealand, acting by and with the advice and consent of the Executive Council of the said Dominion, doth, subject to the conditions set forth in the Schedule hereto, hereby authorize the said Council to erect and maintain electric lines for lighting, power, and heating purposes within the area of supply and along the routes in portion of the Borough of Mount Eden as indicated by red lines on the plan marked P.W.D. 36192, deposited in the office of the Minister of Public Works at Wellington, in the Wellington Provincial District.

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SCHEDULE.
CONDITIONS.

1. Interpretation.

IN this license the following words and phrases shall have the meanings hereby attached to them respectively:—

“Consumer’s wires” means any electric line or lines on the consumer’s premises which are electrically connected with the said Council’s electric supply lines.

“Earthed” means connected with the general mass of earth in such manner as to ensure at all times an immediate and safe discharge to earth of electric energy.

“Electric distribution line” means that portion of the system to which electric service lines are connected for the purpose of supplying consumers.

“Electric line” means any wire, wires, conductor, or other means used for conveying, transmitting, or distributing electricity for power, lighting, or heating purposes; and includes any instrument, insulator, casing, tubing, pipe, covering, or post enclosing or supporting an electric line or anything connected therewith.

“Electric service line” means the line connecting the consumers’ premises to an electric distribution line.

“Extra high pressure” means pressures over 3,300 volts.

“High pressure” means pressures over 650 volts and up to 3,300 volts.

“Inspecting Engineer” means and includes any Inspecting Engineer appointed by the Minister to inspect works constructed or maintained by virtue of any electric-line licenses, or any water-power licenses, or any combined water-power and electric-line licenses issued under the Public Works Act, 1908, and any or all of its amendments, or under any one or more of such amendments only, or any Act or Acts passed in amendment thereof or substitution therefor.

“Low pressure” means pressures up to 650 volts.

“Minister” means Minister of Public Works.

“Pressure” means difference of electric potential.

“Street” includes road.

“Substation” means any building or enclosure, either above or below ground, which shall be accessible only to authorized persons and containing transforming or converting apparatus for the supply of energy.

“Telegraph” includes telephone.

“Telegraph line” has the same meaning as “Electric Line” in the Post and Telegraph Act, 1908.

2. Area of Supply.

The area of supply shall be as follows:—

(a.) City of Auckland as at present constituted.

(b.) The Borough of Newmarket as at present constituted.

(c.) Road District of Eden Terrace as at present constituted.

(d.) Portion of the Eden County.

All as indicated by means of a red border on P.W.D. 37288, deposited in the office of the Minister of Public Works at Wellington, in the Provincial District of Wellington.

3. System of Supply.

Electrical energy shall be supplied on the following systems:—

(a.) Three-wire direct current, with a pressure not exceeding 460 volts between the outers and 230 volts between each outer and the intermediate conductor.

(b.) Three-phase alternating current at a frequency of 50 cycles per second and a pressure of 6,600 volts between phases for transmission to main substations. At the substations this shall be converted to direct current for distribution on the two- or three-wire system at a pressure not exceeding 460 volts between the outer conductors, or transformed for distribution on the three-phase four-wire system at a pressure of 400 volts between phases and 230 volts between each phase and the neutral conductor or transformed to 3,300 volts for distribution to transformers placed in substations or on poles.

The declared pressure at the consumers’ terminals shall be 460 volts and 230 volts respectively for the direct-current supply, and 400 volts and 230 volts respectively for the alternating-current supply. The neutral and intermediate conductors shall be earthed in accordance with clause 4.

4. Connection of Circuits with Earth.

The neutral point of one or more of the generators in service shall be earthed.

The connection with earth of the neutral conductor of the low-pressure three-phase system or the intermediate conductor of the low-pressure three-wire system shall be made at one point only on each distinct circuit—namely, at the generating station, substation, or transformer—and the insulation of the circuit, except at that point, shall be efficiently maintained at all other parts. A switch or link shall be provided for disconnecting the earth connection for testing.

The current from the intermediate conductor to earth shall be continuously recorded by a recording ammeter, and if it at any time exceeds one-thousandth part of the maximum supply current, steps shall be immediately taken to improve the insulation of the system.

5. Regulation of Pressure.

The pressure shall be maintained within 4 per cent. on lighting-distributing circuits above or below the declared pressure at the consumer’s terminals. The said Council shall supply suitable recording voltmeters for this service, and on complaint by any consumer that the variations in voltage exceed these limits, or on the instructions of the Inspecting Engineer, the said Council shall connect a recording voltmeter to record the pressure between the lines at their entrance to the consumers’ premises, and shall supply to the Inspecting Engineer a chart showing the variations in voltage between the lines at this point for a period of seven consecutive days. If the variations thus recorded exceed the above limits the said Council shall take immediate steps to comply with this regulation. If after thirty days a similar chart shows that the above limits of variation in voltage are not complied with, a breach of this license shall be deemed to have been committed. If the accuracy of the said Council’s recording voltmeter is questioned by the consumer, a standard instrument shall be supplied by the Inspecting Engineer, the reading of which shall be accepted as final.

6. Switchboards.

All switchboards shall be made of and mounted on material that is not inflammable; and the maximum permissible current and temperature in any conductor mounted thereon or leading thereto shall not exceed the values permitted under the rules of the Institution of Electrical Engineers of Great Britain. No conductor at a pressure above 650 volts shall be exposed on the front of any switchboard; and the back of any switchboard carrying conductors at a pressure over 650 volts shall be screened off, and accessible only to authorized persons.

All power-house and substation switchboards controlling extra high-pressure circuits shall be provided with two efficient and independent earth-connections, connected in parallel, to which all frames, instrument-cases, and other metal parts thereof shall be connected. Means shall be provided for testing the resistance between these two connections through the earth. Such tests shall be made at least once a month and be recorded.

Every switch intended to be used for breaking a circuit, and every circuit-breaker, shall be so constructed or arranged that it cannot with proper care be left in partial contact or accidentally fall or move into contact when left out of contact.