 | 1891 - 680 стор.
...TROLLEY WIRES. Trolley Wire*— Must be : 1. No smaller than No. 0 B. and S. copper, or No. 4 B. and S. silicon bronze, and must readily stand the strain...insulated from their supports, and in case of the side or double-pole construction, the supports shall also be insulated from the poles immediately outside the... | |
 | Charles M. Davis - 1893 - 162 стор.
...and in full view and reach of the attendant. 38. TROLLEY WIRES— a. Must be no smaller than No. o B. & S. copper or No. 4 B. & S. silicon bronze, and must...readily stand the strain put upon them when in use. b. Must be well insulated from their supports, and, in case of the side or doublepole construction,... | |
 | 1894 - 622 стор.
...view of the attendant. Trollty Wire». 1. Must be no smaller than No. 0 B. &S. copper, or No. 4 B. 4 S. silicon bronze, and must readily stand the strain put upon them when In use. 2. Must be well insulated from their «upoorts, and in case of the side or double pole construction, the... | |
 | Earle Abbott Merrilol - 1896 - 232 стор.
...base and in full view and reach of the attendant. (See Definitions). 39. TROLLEY WIRES:— b. Must be well insulated from their supports, and in case of...also be insulated from the poles immediately outside of the trolley wire. c. Must be capable of being disconnected at the power house, or of being divided... | |
 | Nehemiah Hawkins - 1896 - 570 стор.
...reach of the attendant. (See Definitions.) . 39. TROU.EY WIRES : a. Must be no smaller than No. o, B. & S. copper or No. 4, B. & S. silicon bronze, and...readily stand the strain put upon them when in use. b. Must be well insulated from their supports, and in case of the side or double pole constnfction,... | |
 | Russell Robb - 1896 - 208 стор.
...should be mounted on a non-combustible base. 39. Trolley- wires : a. Must be no smaller than No. 0 B. & S. copper or No. 4 B. & S. silicon bronze, and must...readily stand the strain put upon them when in use. 6. Must be well insulated from their supports, and in case of the side or double-pole construction,... | |
 | Richard Henry Pierce - 1896 - 234 стор.
...submitted for approval before being used. 39. TROLLEY WIRES . — a. Must be no smaller than No o B & S. copper or No. 4 B. & S. silicon bronze, and must...readily stand the strain put upon them when in use b. Must be well insulated from their supports, and in case of the side or double pole construction... | |
 | Nehemiah Hawkins - 1896 - 568 стор.
...attendant. (See Definitions.) 39. TROHEY WIRES : a. Must be no smaller than No. o, B. & S. copper or No. \, B. & S. silicon bronze, and must readily stand the strain put upon them when in use. b. Must be well insulated from their supports, and in case of the side or double pole construction,... | |
 | American Institute of Electrical Engineers - 1897 - 710 стор.
...connected to " earth." TROLLEY WIRES. j. Must not be smaller than No. o n. & s. copper or No. 4 B. ft s. silicon bronze, and must readily stand the strain put upon them when in use. k. Must have a double insulation from the ground. In wooden pole construction, the pole will be considered... | |
 | American Society of Mechanical Engineers - 1898 - 1122 стор.
...effectively connected to " earth." TROLLEY WIRES. j. Must not be smaller than No. 0 B. & S. copper or ]STo. 4 B. & S. silicon bronze, and must readily stand the strain put upon them when in use. k. Must have a double insulation from the ground. In wooden pole construction the pole will be considered... | |
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Must be capable of being disconnected at the power plant, or of being divided into sections, so that, in case of fire on the railway route, the current may be shut off from... 
