1996
Report of accidents
to Director of Public
Works.
Overhead
lines in case of low, medium, and high pressure supply.
No. 18 of 1911.
ELECTRICITY SUPPLY.
injury from lightning, it shall be efficiently protected against such liability.
12. Where any accident by explosion or fire, or any other accident of such kind as to have caused or to be likely to have caused loss of life or personal injury has occurred at any part of any electric line or work, the company shall give immediate notice thereof to the Director of Public Works.
Overhead Lines.
13. (1) The provisions of this regulation shall have effect in the case of overhead lines for low, medium, and high pressure supply, and in the event of such overhead lines being situated under the verandah or balcony of any building the Director of Public Works shall determine how far and to what extent the provisions of this regulation shall apply.
(2) The interval between any two wooden poles used singly as supports for an overhead line shall not exceed 200 feet: provided that where the line makes an angle at any such pole, the interval between that and the next pole shall not exceed 150 feet.
In the case of supports other than single wooden poles the intervals between the supports shall be such as may be prescribed by the Director of Public Works.
(3) Every support for an overhead line shall be of a durable material, and shall be properly stayed against forces due to wind pressure, change of direction of the line, or unequal lengths of span. The factor of safety shall be for overhead lines, at least 5, and for wooden poles at least 10, and for iron or steel structures at least 6, taking the maximum possible wind pressure at 40 pounds per square foot.
(4) All overhead lines shall be attached to insulators, and in the case of lines in which the pressure exceeds 110 volts, unless such lines are erected on the three-wire system as hereinafter described, shall be so guarded that they cannot fall away from the support.
(5) An overhead line, placed after the date of these regulations, shall not in any part thereof be at a less height from the ground than 18 feet, except with the consent of the Director of Public Works, and shall not be accessible to any person without the use of a ladder or other special appliance.
(6) Where a supply is given by overhead lines on the three-wire system, the positive and negative conductors shall be placed side by side above the intermediate conductor. The intermediate conductor shall consist of two wires placed side by side at a distance apart greater than that between the positive and negative conductors, and connected in each span by two cross wires placed in such a manner that in the event of either the positive or negative conductor breaking it shall fall on one at least of the cross wires.
(7) Where a supply is given by overhead lines from a two-wire system, with the negative conductor connected with earth, the positive conductor shall be placed above the negative conductor in such a manner that in the event of breakage it must fall on the negative conductor.