 | National Electric Light Association. Convention - 1913 - 842 halaman
...Spark-Gap Method. 43 Test voltages below 35,000 volts shall be determined ttransformer ratio. MATERIAL 44 Conductors: The conductors shall be of copper, aluminum, or other non-corrodible material, except that in unusually long spans, where the required mechanical strength cannot be obtained with the above materials,... | |
 | Arizona Corporation Commission - 1913 - 948 halaman
...exceeding 60,000.... 120,000 Exceeding 60,000 twice the line voltage 39. Test voltages above 35,000 volts shall be determined by the AIEE Standard Spark-Gap...conductors shall be of copper, aluminum, or other uon-corrodible material, except that in exceptionally lon^ spans, where the required mechanical strength... | |
 | Railroad Commission of the State of California - 1916 - 782 halaman
...bridges shall be used except where special permission is granted by the Commission. Materials. 12. (a) Conductors. The conductors shall be of copper, aluminum, or other non-corrodible material except where the required mechanical strength can not be obtained with the above materials ; if properly protected... | |
 | American Railway Engineering Association - 1914 - 1224 halaman
...42. Test voltages above 35,000 volts shall be determined by the AI EE Standard Spark-Gap Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. MATERIAL. Conductors. 44. The conductors shall be of copper, aluminum, or other non-corrodible material, except... | |
 | Albert Sutton Richey, William Charles Greenough - 1915 - 850 halaman
...Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. 44. Material. Conductors. The conductors shall be of copper, aluminum,...galvanized or copper-covered steel strand may be used. 45. For voltages not exceeding 750 volts, solid or stranded conductors may be used up to and including... | |
 | Albert Sutton Richey, William Charles Greenough - 1915 - 852 halaman
...Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. 44. Material. Conductors. The conductors shall be of copper, aluminum,...be obtained with the above materials, galvanized or npcr-covered steel strand may be used. OVERHEAD CROSSINGS 651 45. For voltages not exceeding 750 volts,... | |
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Conductors: The conductors shall be of copper, aluminum, or other non-corrodible material, except that in exceptionally long spans, where the required mechanical strength cannot be obtained with the above materials, galvanized or copper-covered steel... 
