1434
No. 10 of 1902.
TRAMWAY.
(i) that the current passing from the earth connexions through the indicator to the generator shall not at any time exceed either two amperes per mile of single tramway line, or five per cent. of the total current output of the station.
(ii) that if at any time and at any place a test be made by connecting a galvanometer or other current-indicator to the uninsulated return to any pipe in the vicinity, it shall always be possible to reverse the direction of any current indicated by interposing a battery of three Leclanché cells connected in series if the direction of the current is from the return to the pipe, or by interposing one Leclanché cell if the direction of the current is from the pipe to the return.
In order to provide a continuous indication that the condition (i) is complied with, the company shall place in a conspicuous position a suitable properly connected and correctly marked current-indicator, and shall keep it connected during the whole time that the line is charged.
The owner of any such pipe may require the company to permit him at reasonable times and intervals to ascertain by test that the conditions specified in (ii) are complied with as regards his pipe.
7. When the return is partly or entirely uninsulated a continuous record shall be kept by the company of the difference of potential during the working of the tramway between the points of the uninsulated return furthest from and nearest to the generating station. If at any time such difference of potential exceeds the limit of seven volts, the company shall take immediate steps to reduce it below that limit.
8. Every electrical connexion with any pipe shall be so arranged as to admit of easy examination, and shall be tested by the company at least once in every three months.
9. Every line and every insulated return or part of a return except any feeder shall be constructed in sections not exceeding one-half of a mile in length, and means shall be provided for insulating each such section for purposes of testing.
10. The insulation of the line and of the return when insulated, and of all feeders and other conductors, shall be so maintained that the leakage current shall not exceed one-hundredth of an ampere per mile of tramway. The leakage current shall be ascertained daily before or after the hours of running when the line is fully charged. If at any time it should be found that the leakage current exceeds one-half of an ampere per mile of tramway, the leak shall be localised and removed as soon as practicable and the running of the cars shall be stopped unless the leak is localised and removed within twenty-four hours: Provided that where both line and return are placed within a conduit this regulation shall not apply.
11. The insulation resistance of all continuously insulated cables used for lines, for insulated returns, for feeders, or for other purposes, and laid below the surface of the ground, shall not be permitted to fall below the equivalent of ten megohms for a length of one mile. A test of the insulation resistance of all such cables shall be made at least once in each month.
12. Where in any case in any part of the tramway the line is erected overhead and the return is laid on or under the ground, and where any wires have been erected or laid before the construction of the tramway in the same company ... them, or more ... the public ... in which ... owners ... dispense ...
13. ... not erected ...
14. ... shall ... any ...
15. ... secure ...
16. ... occupy ... and ...
1. ... measure ... equipment ... W/O: ... required ...
1434
No. 10 of 1902.
TRAMWAY.
(i) that the current passing from the earth connexions through the indicator to the generator shall not at any time exceed either two amperes per mile of single tramway line, or five per cent, of the total current ont- put of the station.
(ii) that if at any time and at any place a test be made by connecting a galvanometer or other current-indicator to the uninsulated return to any pipe in the vicinity, it shall always be possible to reverse the direction of any current indicated by interposing a battery of three Leclanche cells connected in series if the direction of the current is from the return to the pipe, or by interposing one Leclanche cell if the direction of the current is from the pipe to the return.
In order to provide a continuous indication that the condition (i) is complied with, the company shall place in a conspicuous position a suitable properly connected and correctly marked current-indicator, and shall keep it connected during the whole time that the line is charged.
The owner of any such pipe may require the company to permit him at reasonable times and intervals to ascertain by test that the conditions specified in (ii) are complied with as regards his pipe.
7. When the return is partly or entirely uninsulated a continuous record shall be kept by the company of the difference of potential during the working of the tramway between the points of the uninsulated return furthest from and nearest to the generating station. If at any time such difference of potential exceeds the limit of seven volts, the company shall take immediate steps to reduce it below that limit.
8. Every electrical connexion with any pipe shall be so arranged as to admit of easy examination, and shall be tested by the company at least once in every three months.
9. Every line and every insulated return or part of a return except any feeder shall be constructed in sections not exceeding one-half of a mile in length, and means shall be provided for insulating each such section for purposes of testing.
10. The insulation of the line and of the return when insulated, and of all feeders and other conductors, shall be so maintained that the leakage current shall not exceed one-hundredth of an ampere per mile of tramway. The leakage current shall be ascertained daily before or after the hours of running when the line is fully charged. If at any time it should be found that the leakage current exceeds one-half of an ampere per mile of tramway, the leak shall be localised and removed as soon as practicable and the running of the cars shall be stopped unless the leak is localised and removed within twenty-four hours: Provided that where both line and return are placed within a conduit this regulation shall not apply.
11. The insulation resistance of all continuously insulated cables used for lines, for insulated returns, for feeders, or for other purposes, and laid below the surface of the ground, shall not be permitted to fall below the equivalent of ten megolims for a length of one mile. A test of the insula- tion resistance of all such cables shall be made at least once in each month.
12. Where in any case in any part of the tramway the line is erected overhead and the return is laid on or under the ground, and where any wires have been erected or laid before the construction of the tramway in
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