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Stranded wire is larger in diameter to allow for gaps between the strands, depending on the number and size of strands. ... NEC copper wire ampacity with 60/75/90 °C ...
The Copper Cliff smelter was already home to some of the world's tallest stacks, including two 500 ft (150 m) chimneys constructed in 1928-29 and 1936. [11] However, these proved to be insufficient and compounded by open coke beds in the early to mid-20th century and logging for fuel, an inevitable near-total loss of native vegetation occurred.
NEC 2008 400.22(f) allows surface marking with ridged, grooves or white stripes on the surface of lamp cord. With transparent cord the hot wire is copper colored, and the neutral is silver colored. Grounding wire of circuit may be bare or identified insulated wire of green or green having yellow stripes. All metallic systems in a building are ...
Also the copy is blurred up enough to give you the impression that maybe what it really means is 1.36 W −1 cm −1 K −1 and 78.6 Btu hr −1 ft −1 F −1 and a type-head that got overdue for its cleaning since the secretary had a tall heap of papers on her desk and if that is the case then the multilingual expression is perfectly ...
553 m (1,814 ft) n/a 118 1976 2 Inco Superstack: Sudbury, Ontario: 380 m (1,250 ft) n/a n/a 1972 The Inco Superstack at the Inco Copper Cliff smelter. 3 First Canadian Place (First Bank Tower) Toronto, Ontario: 355 m (1,165 ft) antenna 298 m (978 ft) 72 1975 First Canadian Place: 4 Commerce Court West Toronto, Ontario: 287 m (942 ft) antenna
An example of a copper alloy conductor is cadmium copper wire, which is used for railroad electrification in North America. [5] In Britain the BPO (later Post Office Telecommunications ) used cadmium copper aerial lines with 1% cadmium for extra strength; for local lines 40 lb/mile (1.3 mm dia) and for toll lines 70 lb/mile (1.7 mm dia).
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