1. No user shall install a fence energiser which delivers impulses of electrical energy to an electric fence which are not equal to or within the following values:
|
Peak value of voltage |
10 kV |
|
Maximum duration of impulse |
50 ms |
|
Minimum interval between impulses |
0.75s |
|
Maximum quantity of electricity per impulse |
2.5 mC |
|
Maximum energy discharge per impulse measured at a resistance of 500 ohms |
8 J |
2. The user shall ensure that every fence energiser -
a. is constructed so as to exclude dust and water; and
b. is not installed in dusty locations or locations where there is a fire hazard.
3. The user shall not install a fence energiser which receives its energy from an electric supply system -
a. in locations where the energiser is likely to sustain mechanical damage or be tampered with;
b. on any pole of an overhead power or communication line except poles which carry the conductors of the energiser; and
c. unless the output circuit is isolated from the supply by means of a double-wound isolating transformer.
4. The user of a fence energiser shall -
a. cause the earth of every fence energiser to be free and at least 2 m away from the earth of any other electrical system; and
b. not electrify barbed-wire but only smooth wire or such articles as will enable a person touching it to let go immediately: Provided that smooth wires attached to barbed wire fences may be electrified.
5. In the case of a fence energiser which receives its energy from a battery charged by means of charging apparatus which receives power from an electric supply, the user shall ensure that the charging apparatus is of double-wound isolation construction.
6. When an electric fence is installed along a public road or in an urban area the user shall-
a. as far as is practicable mount the electrified wires or articles in such positions that persons cannot inadvertently come into contact therewith; and
b. display notices conspicuously, warning people that the property is protected by an electric fence.