 All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow must not be less than three and one-half inches.  Electric Lighting ... - Сторінка 353автори: Francis Bacon Crocker - 1904Повний перегляд - Докладніше про цю книгу
 | 1902 - 742 стор.
...galvanized or the interior surfaces coated or enameled, to prevent oxidization, with some substance that will not soften, so as to become sticky and prevent...of the inner edge of any elbow not to be less than 3£ inches. Must have not more than the equivalent of 4 quarter-bends from outlet to outlet, the bends... | |
 | 1902 - 738 стор.
...100 hours of submersion. i. All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow not to be less than 3J inches. Must have not more than the equivalent of 4 quarter-bends from outlet to outlet, the bends... | |
 | Harry Cooke Cushing - 1902 - 204 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipes. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | American School (Lansing, Ill.) - 1903 - 320 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | 1905 - 484 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not he more than the equivalent of... | |
 | 1906 - 544 стор.
...manner as to be accessible. h. All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow hot to be less than 8a- inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | American School (Chicago, Ill.) - 1906 - 528 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | 1906 - 590 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | Charles Edwin Knox - 1907 - 244 стор.
...coated or enameled with some substance which will not soften so as to become sticky and prevent the wire from being withdrawn from the pipe. k. All elbows...inner edge of any elbow not to be less than three and one half inches. INSTALLATION OF RIGID CONDUITS Rule No. 25. (National Electric Code.) " Interior Conduits."... | |
 | Charles Edwin Knox - 1907 - 242 стор.
...100 hours of submersion. i. All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow must not be less than three and one half inches. Unlined Metal Conduits. /. Plain iron or steel pipes... | |
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