JULY 30.] THE NEW ZEALAND GAZETTE. 2915
every such span they shall be suitably suspended from
exceed one-thousandth part of the maximum supply
effectively earthed steel bearer-wires if the Minister of
current. Every leakage shall be remedied without delay.
Telegraphs shall so require.
Every such circuit shall be tested for insulation at least
Where lead-covered telephone cables may be crossed
once in every week, and the Council shall duly record the
under by the electric line3, if the height and other
results of the tests.
circumstances permit—and of this the Minister shall be the
All material used for insulating electric lines or ap-
judge—the latter wires shall be insulated as in clause 6, and
paratus shall be of the best quality, and thoroughly
durable and efficient, having regard to the conditions of
suspended if deemed necessary.
its use. Suitable provision shall be made for the protec-
tion of the insulating material against injury or removal.
In places where it may be required to cross with the
If the protection so provided is wholly or partly metallic
electric lines through any other aerial wires or through
it shall be efficiently connected with earth.
cables because of the impracticability of crossing above
or below—and crossing above or below shall be done
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 lines across the
pole, protecting them thereon, protecting other wires from
coming into contact with them, and protecting persons
working on the poles from danger of shock shall be to the
satisfaction of the Minister. The electric lines 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 approved 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.
Location of Overhead Lines.
8. In running these lines through streets where no tele-
graph lines exist, the 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 their line of poles is placed the
Council shall arrange to supply so as to interfere as little as
possible with the route on that side of the street.
Except by permission of the Minister of Telegraphs,
all poles for overhead electric lines shall be placed on the
opposite side of the streets to that on which any telegraph
lines exist, and where the erection of the electric line3
necessitates the alteration of telegraph wires that may
exist when the electric line3 are being run, and such
alteration is practicable, the expense of the alteration shall
be borne by the Council.
Facilities for supplying Service.
9. Where the electric lines 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.
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 lines
may, subject to the consent of the Minister of Tele-
graphs, 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 lines on the telegraph poles
is being considered. Such wires must be removed from
telegraph poles upon reasonable notice being given by the
Minister of Telegraphs.
When the electric lines are being laid out provision
should be made, by increased length of pole, to provide
clearance to facilitate crossing with telegraph service wires
to the side of the street occupied by the Council's line.
Size of Conductors.
Earthing Conduits.
Arc Lamps.
Regulation of Pressure.
Transformers.
Rental for Use of Poles.
Insulation of Mains.
10. Telegraph wires shall not be run along or placed on
the Council's poles, nor shall the Council's wires be run along
or placed on telegraph poles, without a special understanding
of requirements and precautions to be observed being arrived
at between a responsible officer of the Council and of the Min-
ister of Telegraphs in respect of each case. 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.
11. 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 220
volts, and the Council shall duly record the results of the
tests of each main or section of a main.
The insulation of every complete aerial and under-
ground 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
12. The sectional area of the conductor in any electric
line laid or erected in any street shall not be less than that
of a strand of seven wires, each of which is of No. 20 standard
wire gauge, and the sectional area of every wire in a strand
forming any such conductor shall not be less than that gauge.
13. 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 through-
out their whole length.
14. 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.
15. The pressure shall be maintained within 4 per cent.
above or below the declared pressure at the consumers'
terminals. The Council shall maintain a suitable recording
voltmeter, and on complaint by any consumers that the
variations in voltage exceed these limits, or on the instructions
of the Inspecting Engineer, the Council shall connect a re-
cording 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 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 these regulations shall be
deemed to have been committed. If the accuracy of the
Council's recording voltmeter is questioned by the consumer,
a standard instrument shall be supplied by the Inspecting
Engineer, the readings of which shall be accepted as final.
16. Transformers shall be placed either on poles or in
substation. Where transformers are placed on poles they
shall be fitted with watertight cases, and attached to the
poles at such a height as to make them inaccessible except
by means of a ladder or other special appliance. Where
transformers are placed within substation, the substation
shall be inaccessible except to authorized persons; all high-
tension conductors therein shall be thoroughly insulated or
protected from accidental contact. A substantial insulating
rubber mat or insulated wooden platform and rubber gloves
shall be supplied. The cases of all transformers, whether
within or without a substation, shall be earthed in accordance
with the rules of the Institution of Electrical Engineers of
Great Britain for earthing.
Where cables are led to and from transformer enclosures
they shall be protected on the poles by being run in iron pipes
which shall be effectively earthed.
In every case where a high-pressure supply is transformed
for the purpose of supply to one or more consumers, some
suitable automatic and quick-acting means shall be provided
to protect the consumer's wires from any accidental contact
with or leakage from the high-pressure circuit either within
or without the transforming apparatus.
Supports for Overhead Lines.
17. Every aerial line shall be attached to supports at
intervals not exceeding 200 ft. where the direction of the
line is straight, or 150 ft. where the direction is curved or
where the line makes a horizontal angle at the point of
support.
Every support for an aerial line shall be of a durable
material, and properly stayed against forces due to wind-
pressure, change of direction of the line, or unequal
lengths of span. The factor of safety shall be for all