1984 Ed.]
Electricity Supply Regulations
[CAP. 103
A 11
tant as possible, or alternatively the metal work shall be connected to an effective earthing device at each individual support. The design and construction of the system of earth connexions shall be such that when contact is made between a line conductor and metal connected with earth the resulting leakage current shall not be less than twice the leakage current required to operate the devices which make the line dead or harmless to human beings or animals.
(17A) An overhead line carrying a voltage not exceeding 11,000 volts may be erected on wooden poles and any line so erected shall comply with the requirements of—
(a) specification No. 1320 of August 1946, issued by the British Standards Institution, with such modification thereto as may be for the time being in force; and
(b) these regulations, except in so far as they are inconsistent with the requirements of paragraph (a).
(18) Where an overhead line is erected along or across a public road or canal or across a railway all wires including earth wires and auxiliary conductors shall be placed at the appropriate height from the ground specified in paragraph (16) for line conductors, and the following additional precautions shall be taken to prevent danger-
(a) in the case of a line erected along a public road or canal (or within 50 feet thereof) there shall be provided-
(i) duplicate insulators supporting the conductors; or
(ii) a device to ensure that in the event of a line conductor falling it shall be put to earth; or
(iii) other means approved by the Director of Electrical and Mechanical Services;
(b) in the case of a line erected across a public road, canal or railway there shall be provided-
(i) duplicate insulators for supporting the line conductor and a device to ensure that in the event of a line conductor falling it shall be put to earth; or
(ii) duplicate insulators supporting duplicate conductors tied at intervals not exceeding 5 feet; or
(iii) other means approved by the Director of Electrical and Mechanical Services.
(19) Supports shall be numbered consecutively and each support shall have a danger notice of a permanent character securely fixed to it. Adequate provision shall also be made to prevent unauthorized climbing.
(20) All overhead lines shall be removed on ceasing to be used for the purposes for which they were erected.
14. Save as above provided, overhead lines shall not be erected except in accordance with such regulations as the Governor in Council may prescribe.
[Subsidiary]
overhead lines on wooden poles; L.N. 236/72.
road-crossing, etc.: L.N. 76/82, L.N. 298/82.
L.N. 76/82, L.N. 298/82.
danger notices:
removal of obsolete lines.
Other overhead lines.