816
THE NEW ZEALAND GAZETTE.
[No. 21

SCHEDULE.

In the following conditions—

“Consumer’s wires” means any electric lines on a consumer’s premises which are connected to the service lines of the said Council at the consumer’s terminals.

“Inspecting Engineer” means the Engineer or other officer appointed by the Minister of Public Works for the purpose of inspecting the works to be constructed or maintained by the said Council.

“Minister” means the Minister of Public Works.

“Pressure” means the difference of electrical potential between any two conductors through which a supply of energy is given, or between any part of either conductor and the earth.

“Telegraph” includes telephone.

Any metallic body, to be “efficiently connected with earth,” shall be connected with the general mass of the earth in such manner as will insure at all times an immediate and safe discharge of electrical energy.

1. The supply of electrical energy shall be given by the continuous-current two-wire system.

2. Continuous current shall be generated at about 220 volts, and the declared pressure at the consumers’ terminals shall be 220 volts.

3. The main switchboard shall be made of and be mounted on material that is not inflammable.

4. All overhead conductors shall be of hard-drawn copper or aluminium, and where they cross over or under open telegraph or any other aerial wires they shall be insulated throughout the entire length of every crossing-span with not less than 300-megohms-per-mile grade of vulcanized rubber, except that where it may be impracticable or undesirable to so insulate the electric-light wires over spans at such crossing-places the insulation of the electric-light wires may be triple weatherproof, provided that all other aerial wires referred to are insulated at those crossing-spans with not less than 300-megohms-per-mile grade of vulcanized rubber, or are otherwise satisfactorily insulated. In cases where telegraph or other aerial wires already exist and are required to be insulated, their insulation shall be effected at the expense of the said Council, and shall be to the satisfaction of the Minister of Telegraphs.

5. Except where otherwise provided, the overhead conductors may be bare. If at any time it is found detrimental to the public safety to have these wires bare, they shall be insulated when deemed necessary. No electric-light wire shall come within 3 ft. of any other class of aerial wires or of cables except where it may be permitted to pass the electric-light wires through these other wires or cables at a pole.

6. Where lead-covered telephone cables are crossed above by the electric-light wires the latter wires shall be insulated with not less than 300-megohms-per-mile grade of vulcanized rubber throughout the crossing-span, and over every such span they shall, if the Minister of Telegraphs so requires, be suitably suspended from effectively earthed steel bearer-wires.

7. Lead-covered telephone cables may be crossed under by the electric-light wires, if the height and other circumstances permit—and of this the Minister of Telegraphs shall be the judge—and in such case the latter wires shall be insulated as required by clause 6, and suspended if deemed necessary.

8. In places where it may be required to cross with the electric-light wires through any other aerial wires or through cables because of the impracticability of crossing above or below (and crossing shall be effected above or below if possible), all such through crossings, if permitted, shall be effected at a pole. In every case of a through crossing, no matter whose property the lines crossed through may be, the method of carrying the electric-light wires across the pole, of protecting them thereon, of preventing other wires from coming into contact with them, and of protecting persons working on the poles from danger of shock, shall be to the satisfaction of the Minister of Telegraphs. The electric-light wires shall be insulated with not less than 300-megohms-per-mile grade of vulcanized rubber where they pass through on the poles, and over the whole length of the span on each side of the pole crossed through. Where the insulated wires cross through on the pole they shall be encased in some hard protecting substance for the entire length of the arms on such pole. If metal pipe is used to encase the wires it shall be effectively earthed.

9. In running the lines authorized by this license through streets where no telegraph lines exist the said Council shall keep to one side of the street, and in running service wires to the opposite side of the street to that on which its line of poles is placed the Council shall interfere as little as possible with the route on that side of the street.

10. Except by permission of the Minister of Telegraphs, all overhead electric-light pole lines shall be placed on the opposite side of the street to that on which any telegraph pole lines exist, and where the erection of the electric light wires necessitates the alteration of any existing telegraph wires the expense of the alteration shall be borne by the said Council. No such alteration shall be effected except with the permission of the Minister of Telegraphs.

11. Where the electric-light wires are on one side of a street and the telegraph wires are on the other, and service is required to be given from each to the other side of the street, each party shall give the other reasonable facilities as far as possible to effect supply.

12. Where it cannot be arranged otherwise, and there is room on the telegraph poles, and other circumstances do not render it unsafe or impracticable, the electric-light wires may be run along on the telegraph poles, subject to their insulation being not less than 300-megohms-per-mile grade of vulcanized rubber and to any special conditions that it may be found necessary to impose at the time that the placing of such electric-light wires on the telegraph poles is being considered.

13. If, in the opinion of the Minister, the erection or existence overhead of wires authorized by this license constitutes a danger to the public owing to the number of wires, whether electric or other wires, already carried overhead, or to the congestion of buildings in the vicinity of such wires, or to any other cause, he may notify the said Council to that effect, and upon receipt of such notice the Council shall, within six months thereof, place such first-mentioned wires underground, or erect them by another overhead route with and subject to the approval of the Minister.

14. Telegraph wires shall not be run along or placed on the said Council’s poles, nor shall the Council’s wires be run along or placed on telegraph poles, without a special understanding as to requirements and precautions to be observed being arrived at in each case between a responsible officer of the Council and an officer appointed by the Minister of Telegraphs. Rental at a rate to be agreed upon may be charged for the use of poles, but nothing in this license shall be construed to give any party a right to the use of poles other than its own.

15. Every main shall be tested for insulation after having been placed in position and before it is used for the purposes of supply, the testing pressure being at least 500 volts, and the Council shall duly record the results of the tests of each main or section of a main, and forthwith forward copies of such record to the Under-Secretary for Public Works, Wellington.

16. The insulation of every complete aerial and underground circuit used for the supply of energy, including all machinery, apparatus, and devices forming part of or in connection with such circuit, shall be so maintained that the leakage current shall not under any conditions exceed one-thousandth part of the maximum supply current. Every leakage shall be remedied without delay. Every such circuit shall be tested for insulation at least once in every week, and the said Council shall duly record the results of the tests, and forward copies of such records at the end of each week to the Under-Secretary for Public Works at Wellington.

17. The sectional area of the conductor in any electric line laid or erected in any street shall be not less than that of a strand of seven wires, each of which is of No. 18 or 20 standard wire gauge, and the sectional area of every wire in a strand forming any such conductor shall be not less than that gauge.

18. All material used for insulating electric lines or apparatus shall be of the best quality, and thoroughly durable and efficient, having regard to the conditions of its use. Suitable provision shall be made for the protection of the insulating material against injury or removal. If the protection so provided is wholly or party metallic, it shall be efficiently connected with earth.

19. All metal pipes or coverings containing any electric wire shall be efficiently connected with earth, and shall be so jointed as to make good electrical connection throughout their whole length.

20. Arc lamps used in any street for public lighting shall be so fixed as not to be in any part at a less height than 10 ft. from the ground. All arc lamps shall be so guarded as to prevent pieces of ignited carbon or broken glass falling from them, and shall not be used in situations where there is any danger of the presence of explosive dust or gas.

21. The variation of pressure at any consumer’s terminals shall not, under any conditions of the supply which the consumer is entitled to receive, exceed 4 per cent. from the normal pressure at which he is being supplied.

22. Every support for an aerial line shall be of durable material, and properly strengthened against forces due to wind-pressure, change of direction of the line, and unequal length of span. The factor of safety of such supports, taking into consideration all possible stresses, including