Pakton PTE1000 Series Installation & User Manual - page 36
08/07/2006 10:11 PM
Page 36 of 43
Figure 5 – Warning plate symbol
8. The
energizer earth electrode
shall penetrate the ground to a depth of at least 1 m.
9.
Connecting leads
that are run inside buildings shall be effectively insulated from the
earthed structural parts of the building. This may be achieved by using insulated high
voltage cable.
10.
Connecting leads
that are run underground shall be run in a conduit of insulating material
or else insulated high voltage cable shall be used. Care shall be taken to avoid damage to
the
connecting leads
due to the effects of animal hooves or tractor wheels sinking into the
ground.
11.
Connecting leads
shall not be installed in the same conduit as the mains supply wiring,
communicating cables or data cables.
12.
Connecting leads
and
electric fence
wires shall not cross above overhead power or
communication lines.
13. Crossings with overhead power lines shall be avoided wherever possible. If such a crossing
cannot be avoided, it shall be made underneath the power line and as nearly as possible at
right angles to it.
14. If
connecting leads
and
electric fence
wires are installed near an overhead power line, the
clearances shall be not less than those shown in table 3.
Power line voltage V Clearance m
1 000
3
>1 000
4
>33 000
8
Table 8 – Minimum Clearances from Power Lines
15. If
connecting leads
and
electric fence
wires are installed near an overhead power line,
their height above the ground shall not exceed 2 m. This height applies either side of the
orthogonal projection of the outermost conductors of the power line on the ground surface,
for a distance of
x
2 m for power lines operating at a nominal voltage not exceeding 1,000 V
x
15 m for power lines operating at a nominal voltage exceeding 1,000 V.
Particular requirements for electric animal fences in Australia
16. A distance of at least 10 m shall be maintained between the
energizer earth electrode
and
any other earthing system such as the power supply system protective earth or the
telecommunication system earth.
17.
Electric fences
intended for deterring birds, household pet containment or training animals
such as cows need only be supplied from low output
energizers
to obtain satisfactory and
safe performance.
18. In
electric fences
intended for deterring birds from roosting on buildings, no
electric fence
wire shall be connected to the
energizer earth electrode.
A warning plate, as described
above, shall be fitted to every point where persons may gain ready access to the
conductors.
19. A non-electrified fence incorporating barbed wire or razor wire may be used to support one
or more off-set electrified wires of an
electric animal fence.
The supporting devices for the
electrified wires shall be constructed so as to ensure that these wires are positioned at a
minimum distance of 150 mm from the vertical plane of the non-electrified wires. The barbed
wire and razor wire shall be earthed at regular intervals.