22548-1911-Supplementary-Bills-read-a-first-time--Widows-and-Orphans-Pension-Amendment-No-2- — Page 7

Electric

continuity of metal conduits, pipes, and

casings of high pres- sure line.

Precau-

tions to be taken when bare conductors are used.

High pres-

sure lines laid above

ground or

17. All metal conduits, pipes, or casings containing any high pressure electric line shall be efficiently con- nected with earth, and shall be so jointed and connected across all street boxes and other openings as to make good electrical connection throughout their whole length.

18. Where the conductors of electric lines placed in any conduit are not continuously covered with insulating material they shall be secured in position, and no unfixed uninsulated material of a conducting nature shall be contained in the conduit. No such conductor shall be at a pressure exceeding 300 volts from earth.

Adequate precautions shall also be taken to ensure that no accumulation of water shall take place in any part of the conduit, and to prevent any dangerous access of moisture to the conductors or the insulators.

The insulators of any such electric line shall be so disposed that they can be readily inspected, but this requirement shall not apply to any such insulators which before the date of these regulations were not required by any regulation then in foree to be so capable of ready inspection.

19. Every portion of any high pressure electric line placed above the surface of the ground, or in any subway not in the sole occupation of the company, shall be com- in subways. pletely enclosed either in a tube of highly insulating material embedded in brickwork, masonry, or cement concrete, or in strong metal casing efficiently connected with earth.

Protection

for the

surface of

the ground and elec- tric lines.

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.

Completion 21. A high pressure electric line shall not, except with and control

the consent of the Director of Public Works, be used for of high pres- sure lines. 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.

Street boxes.

Sub-stations and Street Boxes.

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 regula- tion 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 imme- diately 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 form- ing 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 capa- city, ample provision shall be made, by

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