SEPT. 6.] THE NEW ZEALAND GAZETTE. 2511

41-77. Where an uplift occurs at a pole or other support :—
(a) Every high pressure or extra-high pressure aerial
electric line shall be secured to a shackle insulator
or other suitable insulator so that it cannot become
detached, or it shall be protected by a stirrup fitted
over the line and fastened at both ends to the cross-
arm or by means of a suitable clamp attached
to the insulator, except in those cases where any
such line in becoming detached from its support
will not reduce the standard clearance between
conductors or otherwise be dangerous.

(b) Every medium pressure or any lower pressure aerial
electric line erected on the same pole or other support
as lines at other pressures shall be secured to a
shackle insulator or other suitable insulator, except
in those cases where any such line when detached
from its support will not decrease the clearance
between it and the lines above by more than one-half
the clearances specified in Regulation 41-38 hereof.

41-78. Any crossarm carrying a high pressure overhead
electric line which is erected on a pole carrying a telegraph-
line shall have a distinctive red marking thereon.

41-79. (1) Where covered electric lines of any pressure are
used they shall be so attached to the insulators that their
covering is not thereby impaired or likely to become impaired.
(2) Bare binding-wire shall not be used on covered wire
unless at least two layers of compounded weatherproof tape
are first wrapped round the outside of the covering of the wire.
(3) Where marline is used it shall be not less than three-ply,
tightly wound and of first quality.

41-80. Every crossarm on terminal poles or pull-offs shall
be so fixed that the pull on the wires will draw the crossarm
towards the pole, and not away from it.

41-81. Aerial electric lines at medium pressure or any lower
pressure may be carried on brackets attached to buildings,
provided they are inaccessible from any portion of the building
without the use of a ladder or other special appliance, and
provided also that they are secured in such a manner that they
cannot fall away from the insulator-support or make contact
with the building.

STAYS, STRUTS, AND TRUSSES.

41-91. (1) Except where it is erected alongside a sub-
stantial fence or hedge, every stay, strut, or truss used within
borough, town district, or township limits shall not be less
than 9 ft. above ground-level.
(2) Outside such limits as aforesaid, a stay-wire may be
attached to a stub-pole or a log of durable wood, or other form
of “ deadman ” buried at least 4 ft. below ground-level, and it
shall be attached to the “ deadman ” by means of a galvanized-
iron bolt at least ¾ in. in diameter, and the wire itself shall not,
at any part thereof, be in contact with the ground.
(3) Where any stay less than 9 ft. above ground-level is
not erected alongside a substantial fence or hedge it shall
be guarded by—
(a) A substantial post-and-rail fence erected round the stay ;
or
(b) Two posts in line with and immediately against the stay,
provided with a rail fitted between or on top of the
posts ; or
(c) A galvanized-iron pipe not less than 2 in. in diameter
enclosing the stay ; or
(d) A double wooden batten (each batten being not less
than 2 in. by 1 in.) securely fastened, with the stay
between the battens ; or
(e) Some other approved device ;
and the guard shall extend from the point where the stay-bolt
enters the ground to a point where the stay is not less than
9 ft. above ground-level:
Provided that where a stay is elsewhere than in a street,
and there is no danger of any person being injured by coming
in contact therewith, the guard may be omitted.
(4) All guards shall be painted white.
(5) All stay-wires shall be stranded with a minimum of
three strands.
(6) The height of every stay, and the like, over a street shall
not be less than 18 ft. above ground-level.
(7) When used to stay any pole carrying a high pressure or
extra-high pressure electric line within borough, town
district, or township limits, every metal stay, strut, or truss
shall be earthed. Outside such limits, such stay, strut,
or truss shall be earthed when any part thereof is erected at
a less height than 9 ft. above ground-level.
(8) Every stay-wire made from steel having an ultimate
strength of not less than 80,000 lb. per square inch shall have
a factor of safety of not less than 2·25. All other stay-wires
shall have a factor of safety of not less than 3.

41-92. (1) In those cases where the stay, strut, or truss is
required by these regulations to be earthed, and where the
resistance in accordance with Regulation 51-01 hereof cannot
be obtained, the stay when used to stay poles other than metal,
shall have, in addition to earthing, a strain insulator (or
insulators) of the interlocking type, or some other approved
type, inserted therein not less than 9 ft. vertically above
ground-level.
(2) Each insulator used shall have a mechanical strength
at least equal to that of the stay in which it is installed, and
for pressures not exceeding 35,000 volts shall also have a
minimum flash-over voltage in accordance with Regulation
51-22 hereof. Where the pressure exceeds 35,000 volts the
stay shall be insulated in an approved manner.

41-93. Every metal stay, strut, or truss with which a
telegraph linesman is likely to make contact when attending
to telegraph-lines shall be earthed.

PART 42.—OVERHEAD CONDUCTORS II.
PRECAUTIONS WITH METAL.

42-01. All live metal less than 14 ft. above ground-level,
and attached to any pole or other support, shall be protected
in such a manner that unauthorized persons cannot make
accidental contact therewith.

42-02. All metal attached to any pole or other support, and
not connected to the circuit, and which may become charged
by accident or otherwise, shall be earthed or otherwise
adequately protected if placed less than 9 ft. above ground-
level.

42-03. Every metal tower and pole shall be earthed.

MAXIMUM SPAN.

42-11. (1) The distance between supports carrying an
aerial electric line within borough or town district limits, or
within such other limits as may be specified in the license,
shall not exceed 24 chains (165 ft.) unless the Minister otherwise
approves in writing.
(2) Where poles are erected on both sides of a street they
shall, where practicable, be placed opposite each other.

42-12. The maximum span of any aerial electric line where
crossing a railway-line shall not exceed that prescribed by
clause (2) of Regulation 46-11 hereof.

42-13. The maximum span of any aerial electric line where
crossing a telegraph-line shall not exceed that prescribed by
paragraph (g) of Regulation 45-05 hereof.

STREET CROSSINGS.

42-21. Where an aerial electric line crosses any street within
which it is erected, no angle formed by the street and the line
crossing the street shall be less than 45°.
This regulation shall not apply to street intersections where
the electric line does not change its direction.

COVERING OF AERIAL ELECTRIC LINES AND USE OF BARE
WIRE.

42-31. (1) Every aerial electric line at medium pressure
or any lower pressure within a borough, town district, or town-
ship, or within such other limits as may be specified in the
license, shall, except as provided in Regulation 42-33 hereof,
be covered throughout with good quality triple-braiding,
thoroughly impregnated with weatherproof compound or
other approved covering.
This covering shall not be deemed to be an insulating
covering for making the line safe to handle when alive. All
joints shall be effectively covered with compounded weather-
proof tape.
(2) Every aerial electric line at high pressure within a
borough, town district, or township, or within such other
limits as may be specified in the license, shall be covered with
vulcanized-rubber of at least 600 megohm grade.
This covering shall not be deemed to be an insulating
covering for making the line safe to handle when alive. All
joints shall be effectively covered with rubber and com-
pounded weatherproof tape.
(3) Notwithstanding anything to the contrary in the fore-
going provisions of this regulation, bare wires may be erected
within borough, town district, or township limits in such
places as are approved in writing by the Minister.
(4) Every aerial electric line at extra-high pressure shall
be bare.
(5) Except as prescribed in Regulation 45-05 hereof, an
aerial electric line at any pressure may be bare when erected
outside the limits aforesaid.

42-32. (1) Every aerial electric line at medium pressure or
any lower pressure which is attached to a building shall,
except as provided in Regulation 42-33 hereof, be covered
with good quality triple-braiding thoroughly impregnated
with weather-proof compound or other approved covering :—
(a) In the case of every residence—
(i) For the whole length of such line where the
length is 60 ft. or less ;
(ii) For not less than 60 ft. from the residence
where such line exceeds 60 ft.
(b) In all other cases for a distance of not less than 6 ft.
from the building.