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Carquinez Strait Powerline Crossing was the world's first powerline crossing of a large river. It was built in 1901 for a 60 kV powerline operated by to deliver electric power from their Colgate powerhouse to Oakland, California. For this a crossing of Carquinez Strait was required, which has at its narrowest point at Dillon Point a width of 838 metres (0.52 mi). Such a span width was impossible with wooden poles, which were common in those days. Installing an underwater cable was considered, but for reliability reasons an overhead power line was installed, which used at the north site of the river a 68 metres (223.10 ft) tall lattice tower and at the south site one with a height of 20 metres (66 ft).

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  • Freileitungskreuzung der Carquinez-Straße (de)
  • Carquinez Strait Powerline Crossing (en)
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  • Die Freileitungskreuzung der Carquinez-Straße war die erste Kreuzung eines größeren Wasserweges durch eine Freileitung. Sie wurde 1901 für eine 60-kV-Leitung der Bay Counties Power Company errichtet, um elektrische Energie von deren Kraftwerk Colgate Powerhouse nach Oakland zu liefern. Hierzu musste die Leitung die Carquinez-Straße überqueren, die an der schmalsten Stelle am Dillon Point 840 m breit ist. Der Mast der Freileitungskreuzung auf dem Nordufer war 68, der am Südende 20 Meter hoch. Die Spannweite der Leitung betrug 1380 Meter. Die Isolatoren für die Freileitungskreuzung wurden vom Unternehmen des amerikanischen Erfinders Fred Morton Locke geliefert. (de)
  • Carquinez Strait Powerline Crossing was the world's first powerline crossing of a large river. It was built in 1901 for a 60 kV powerline operated by to deliver electric power from their Colgate powerhouse to Oakland, California. For this a crossing of Carquinez Strait was required, which has at its narrowest point at Dillon Point a width of 838 metres (0.52 mi). Such a span width was impossible with wooden poles, which were common in those days. Installing an underwater cable was considered, but for reliability reasons an overhead power line was installed, which used at the north site of the river a 68 metres (223.10 ft) tall lattice tower and at the south site one with a height of 20 metres (66 ft). (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/South_tower,_at_Crockett,_looking_over_Carquinez_Straits_(14780004404).jpg
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  • CA-191 (en)
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  • ca2384 (en)
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  • Carquinez Straits Transmission Span (en)
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  • 38.05638888888889 -122.20138888888889
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  • Die Freileitungskreuzung der Carquinez-Straße war die erste Kreuzung eines größeren Wasserweges durch eine Freileitung. Sie wurde 1901 für eine 60-kV-Leitung der Bay Counties Power Company errichtet, um elektrische Energie von deren Kraftwerk Colgate Powerhouse nach Oakland zu liefern. Hierzu musste die Leitung die Carquinez-Straße überqueren, die an der schmalsten Stelle am Dillon Point 840 m breit ist. Der Mast der Freileitungskreuzung auf dem Nordufer war 68, der am Südende 20 Meter hoch. Die Spannweite der Leitung betrug 1380 Meter. Die Isolatoren für die Freileitungskreuzung wurden vom Unternehmen des amerikanischen Erfinders Fred Morton Locke geliefert. (de)
  • Carquinez Strait Powerline Crossing was the world's first powerline crossing of a large river. It was built in 1901 for a 60 kV powerline operated by to deliver electric power from their Colgate powerhouse to Oakland, California. For this a crossing of Carquinez Strait was required, which has at its narrowest point at Dillon Point a width of 838 metres (0.52 mi). Such a span width was impossible with wooden poles, which were common in those days. Installing an underwater cable was considered, but for reliability reasons an overhead power line was installed, which used at the north site of the river a 68 metres (223.10 ft) tall lattice tower and at the south site one with a height of 20 metres (66 ft). (en)
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  • POINT(-122.20138549805 38.05638885498)
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