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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... "
Proceedings of the American Electric Railway Engineering Association ... - Halaman 115
oleh American Electric Railway Engineering Association. Convention, American Electric Railway Association - 1911
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Pole and Tower Lines for Electric Power Transmission

Robert Duncan Coombs - 1916 - 272 halaman
...Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. MATERIAL 44. Conductors. — The conductors shall be of copper,...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...
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Pole and Tower Lines for Electric Power Transmission

Robert Duncan Coombs - 1916 - 272 halaman
...voltages below 35,000 yolts shall be determined by trans former ratio. MATERIAL 44.Conductors.@The conductors shall be of copper, aluminum, or other...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...
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Pole and Tower Lines for Electric Power Transmission

Robert Duncan Coombs - 1916 - 272 halaman
...Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. , MATERIAL 44. Conductors. — The conductors shall be of copper,...materials, galvanized or copper-covered steel strand may beused. 45. For voltages not exceeding 750 volts, solid or stranded conductors may be used up to and...
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Decisions, Volume 10

California Public Utilities Commission - 1916
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Pole and Tower Lines for Electric Power Transmission

Robert Duncan Coombs - 1916 - 272 halaman
...42. Test voltages above 35,000 volts shall be determined by 'the AIEE Standard Spark-gap Method. 43. Test voltages below 35,000 volts shall be determined by transformer ratio. MATERIAL 44. Conductors. — The conductors shall be of copper, aluminum, or other non-corrodible material,...
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Public Utilities Reports

Henry Clifford Spurr, Ellsworth Nichols - 1917
...pounds breaking strength shall be used for cables of greater weight. 414- Wire for Supply Circuits. a. The conductors shall be of copper, aluminum, or other...galvanized or copper-covered steel strand may be used. b. For voltages not exceeding 750 volts, solid or stranded conductors may be used up to and including...
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Opinions and Orders, Volume 4

Illinois. Public Utilities Commission - 1917
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Proceedings of the ... Annual Convention of the American Railway Engineering ...

American Railway Engineering Association - 1915
...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...
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