636
THE NEW ZEALAND GAZETTE.
[No. 19

conductors and their insulating covering, and all the structural
parts and electrical appliances and devices belonging to or
connected with the line, shall be duly and efficiently super-
vised and maintained as regards both electrical and me-
chanical conditions.

32. An aerial line shall not be permitted to remain erected
    after it has ceased to be used for the supply of energy, unless
    the Corporation intends within a reasonable time again to
    take it into use.

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

34. The Corporation shall be responsible for all electric
    lines, fittings, and apparatus belonging to it, or under its
    control, which may be upon a consumer’s premises, being
    maintained in a safe condition and in all respects fit for
    supplying energy.

35. In delivering the energy to a consumer’s terminals the
    Corporation shall exercise all due precautions so as to avoid
    risk of causing fire on the premises.

36. The maximum working-current in any conductor shall
    not be sufficient to raise the temperature of the conductor or
    any part thereof to such an extent as to materially alter the
    physical condition or specific resistance of the insulating
    covering, if any, or in any case to raise such temperature to
    a greater extent than 130° Fahr. The cross-sectional area and
    conductivity at joints must be sufficient to avoid local heating,
    and the joints must be carefully made, resin being used as a
    flux, and must be protected against corrosion. The sectional
    area of all conductors on the consumer’s premises from the
    main switchboard or from any distribution-board must be
    maintained throughout the circuit, and joints should be
    made only when branching off a circuit, and should be at
    least 8 in. distant from a joint in any other conductor.

37. All electric lines and apparatus on a consumer’s pre-
    mises, excepting such parts as are required to be connected
    to earth, shall be highly insulated, and be suitable for the
    voltage at which supply is being given. They shall be
    thoroughly protected against injury to the insulation or
    access of moisture, and any metal forming part of the
    electric circuit shall not, unless efficiently connected with
    earth, be exposed so that it can be touched. All electric
    lines shall be so fixed and protected as to prevent the possi-
    bility of electrical discharge to any adjacent metallic sub-
    stance.

38. The Corporation shall fix, where their service mains
    terminate on any premises, double-pole well protected fuses
    of at least 2 in. clear break for all currents in excess of
    20 amperes. The consumer shall also place, as near to the
    entrance-fuses as may be practicable, double-pole main
    switches of ample carrying-capacity, well insulated, with
    quick break of sufficient clearance to prevent arcing.

39. The wiring shall be done from distributing-boards,
    which shall be of incombustible material. Suitable fuses
    on each pole fitted to engage in spring clips shall be placed
    on these boards, so that it shall be possible to disconnect any
    or all circuits from the supply. If double-pole switches be
    used on the distributing-board circuits, fuses need not then
    be of the type to engage in spring clips.

40. The covers of fuses, switches, and plugs should be of
    porcelain or other incombustible non-conducting material,
    or of rigid metal lined with vitreous enamel or suchlike
    substance. All metal parts liable to be touched must be
    effectively insulated from the electrical circuit.

41. There must be a porcelain bridge or other efficient in-
    sulation between the terminals of lamp-holders, and where
    lamp-holders are liable to be handled by persons making
    good earth contact they should be provided with non-con-
    ducting covers. Not more than ten sixteen-candle-power
    incandescent lamps shall be controlled by each sub-switch.

42. The insulation of conductors used for interior wiring
    shall be of vulcanised rubber of not less than 600-megohms-
    per-mile grade, or of other approved material suitably pro-
    tected. Concentric conductors may be used, and their
    insulation-resistance shall not be less than that required for
    separate conductors. All interior conductors carrying cur-
    rent to apparatus at 440 volts shall be run in strong metal
    casing.

43. 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.

44. 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.

45. Arc lamps used in any street for private lighting shall
    be so fixed as not to be in any part at a less height than 8 ft.
    from the ground, and shall be so screened as to prevent risk
    of contact with persons.

46. Arc lamps must be insulated from earth and be fixed
    so that they cannot swing into contact with any substance,
    metallic or otherwise, that might connect them to earth.

They may be run in series, and at any available voltage up
to 440 volts. The street circuits shall be controlled from the
distributing-station by double-pole switches and fuses.

Resistances for the regulation of arc-lamps, if exterior to
the lamp, shall be mounted on incombustible bases, shall be
so placed that they cannot by conduction or radiation set fire
to any contiguous materials, and shall be of ample size to
safely carry the maximum current that will normally flow
through them. Each arc-lamp circuit shall be provided
with a fuse on each pole. Interior arc lamps shall also be
provided with a switch on each circuit.

47. The frame of all motors supplied at 220 or 440 volts
    shall be connected to an efficient earth by a copper con-
    ductor, which shall be equal to the area of one of the
    conductors leading to the motor, but need not exceed 7/16
    gauge. All metal casings of switches, resistances, fuses,
    cables, and wires shall be efficiently earthed in a similar
    manner.

48. Every motor must be controlled by an efficient double-
    pole quick-break switch suitable to prevent arcing, and con-
    veniently placed so that the person in charge of the motor
    can cut off wholly the supply from the motor, and all devices
    in connection therewith.

49. Efficient single-pole fuses or other automatic cut-out
    must be provided to efficiently protect the conductors on
    each pole from excess of current.

50. Every precaution shall be taken in choosing positions
    for and in the wiring and setting-up of motors, and the
    necessary devices in connection therewith, so that there shall
    be no danger of fire being caused by their normal or abnormal
    action, or of shock being sustained in the ordinary handling
    thereof.

51. Terminals of motors supplied at 220 or 440 volts must
    be so guarded that they cannot be accidentally touched or
    short-circuited.

52. The insulation-resistance of each motor-circuit, in-
    cluding all devices necessary for the working of the motor,
    shall be not less than 1 megohm to earth when all metal
    parts that are required to be connected to earth are so
    connected.

53. A printed notice shall be fixed in a conspicuous position
    at every motor and switchboard, forbidding unauthorised
    persons to touch the motors or apparatus.

54. The Corporation shall not connect the wires and fit-
    tings on a consumer’s premises with its mains, or, in the
    case of premises already connected, continue the supply
    from its mains, unless it is reasonably satisfied that the
    requirements of this license are complied with, that the
    wiring and fittings are suitable for the voltage at which
    supply is being given, and that the connection or continu-
    ance of supply would not cause a leakage from those wires
    and fittings exceeding one ten-thousandth part of the maxi-
    mum supply-current to the premises; and where the Cor-
    poration declines to make such connection or to continue
    supply it shall serve upon the consumer a notice stating its
    reasons for so declining.

55. If the Corporation is reasonably satisfied, after making
    all proper examination by testing or otherwise, that the
    wiring and fittings are not suitable for the voltage being
    employed, that a leakage exists at some part of a circuit of
    such extent as to be a source of danger, and that such leak-
    age does not exist at any part of the circuit belonging to
    the Corporation, or that any other requirements of this
    license are not complied with, then and in such case any
    officer of the Corporation duly authorised by it in writing,
    or, if the Corporation so require, on application by it to the
    Electric Telegraph Commissioner, any officer of the Post and
    Telegraph Department (hereinafter referred to as an “ Electric
    Inspector ”) instructed to so act, may, for the purpose of
    discovering whether the leakage exists at any part of a circuit
    within or upon any consumer’s premises, or whether the wiring
    is suitable and the general requirements of the license are
    complied with, by notice require the consumer at some
    reasonable time after the service of the notice to permit him
    to inspect and test the wires and fittings belonging to the
    consumer and forming part of the circuit.

In any case where the Corporation requires the services of
an Electric Inspector under this section it shall pay the cost
of such inspection.

If on such testing and inspection the officer or the Electric
Inspector discovers a leakage from the consumer’s wires
exceeding one ten-thousandth part of the maximum supply-
current to the premises, or that the requirements of this license
are not properly conformed to, or if the consumer does not
give all due facilities for inspection and testing, the Corpora-
tion shall forthwith discontinue the supply of energy to the
premises in question, giving immediate notice of the discon-
tinuance to the consumer, and shall not recommence the
supply until it is reasonably satisfied that the leakage has
been removed, and that the installation is in conformity with
this license.

56. If any consumer is dissatisfied with the action of the
    Corporation in refusing to give, or in discontinuing, or in not