101. Leakage on system other than conduit system .-Where both the line and the return are not placed within a conduit, the leakage current shall be ascertained daily before or after the hours of running, when the line is fully charged; and if at any time it is found to exceed 0.3 ampere per km. of single tramway track, the transmission and use of energy shall be suspended unless the leakage is stopped within twenty-four hours.
