Electricity Supply.
[CAP. 103
for surface
20. Where any high pressure electric line is laid beneath the surface of the ground, efficient means shall be taken to render it impossible that the surface of the ground or any neighbouring electric line or conductor shall become charged by leakage from the high pressure electric line.
21. A high pressure electric line shall not, except with the consent of the Director of Public Works, be used for the supply of energy before it has been completely laid, properly jointed, examined and tested, or until it is in the sole charge of the company, and every such line shall during its use be in the sole charge of the company.
Sub-stations and street boxes.
Completion of high lines.
and control
pressure
22. Sub-stations shall be established in suitable places and shall be in the sole occupation and charge of the company. Sub-stations shall be erected above ground wherever possible, but where necessarily underground, due provision shall be made for ventilation and for drainage.
23. In addition to the provisions contained in regulation 15 as to the construction of receptacles for electric lines, the following conditions shall be observed with respect to street boxes-
(a) the covers of all street boxes shall be so secured that they cannot be opened except by means of a special appliance;
(b) the covers of all street boxes containing high pressure apparatus other than cables shall be connected to strips of metal laid immediately underneath the street, and efficient means shall be taken to render it impossible that the covers or other exposed parts of these boxes, or any adjacent material forming the surface of the street, shall become electrically charged, whether by reason of leakage, defect or otherwise;
(c) where street boxes are used as transformer chambers, reasonable means shall be taken to prevent as far as possible any influx of water, either from the adjacent soil or by means of pipes; and in the case of any such street box exceeding one cubic yard in capacity, ample provision shall be made, by ...
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