 Bushings must be long enough to bush the entire length of the hole in one continuous piece, or else the hole must first be bushed by a continuous waterproof tube.  Science and Industry - Էջ 2581902Ամբողջությամբ դիտվող - Այս գրքի մասին
 | Frank Eugene Kidder - 1892 - 1032 էջ
...of lamps or on hanger boards, cut-out boxes, or the like, •where less distance is necessary. (/) Must be separated from contact with walls, floors,...partitions through which they may pass, by non-combustible insulating tube or hard rubber tube. (g) Must be so spliced or joined as to be both mechanically and... | |
 | Charles M. Davis - 1893 - 162 էջ
...structure of lamps or on hanger boards, cut-out boxes, or the like, where less distance is necessary. /. Must be separated from contact with walls, floors,...partitions through which they may pass by non-combustible insulating tube or hard-rubber tube. g. Must be so spliced or joined as to be both mechanically and... | |
 | Russell Robb - 1896 - 206 էջ
...structure of lamps or on hanger-boards, cut-out boxes, or the like, where less distance is necessary. /. Must be separated from contact with walls, floors,...partitions through which they may pass, by noncombustible insulating tube. g. Must be so spliced or joined as to be both mechanically and electrically secure... | |
 | Richard Henry Pierce - 1896 - 234 էջ
...structure of lamps or on hanger boards, cut-out boxes, or the like, where less distance is necessary, f. Must be separated from contact with walls, floors,...partitions through which they may pass by non-combustible insulating tube. g. Must be so spliced or joined as to be both mechanically and electrically secure... | |
 | Earle Abbott Merrill - 1896 - 222 էջ
...structure of lamps or on hanger boards, cut-out boxes, or the like, where less distance is necessary. f. Must be separated from contact with walls, floors,...partitions through which they may pass by noncombustible insulating tube. g. Must be so spliced or joined as to be both mechanically and electrically secure... | |
 | Earle Abbott Merrilol - 1896 - 232 էջ
...structure of lamps or on hanger boards, cut-out boxes, or the like, where less distance is necessary. with walls, floors, timbers, or partitions through which they may pass by noncombustible insulating tube. g. Must be so spliced or joined as to be both mechanically and electrically secure... | |
 | Nehemiah Hawkins - 1896 - 570 էջ
...hanger-boards, cut-out boxes, or the like, where less distance is necessary. f. Must be separated from conctact with walls, floors, timbers or partitions through which they may pass by non combustible insulating tube. WIRING RULES AND REQUIREMENTS. g. Must be so spliced or joined as... | |
 | American Institute of Electrical Engineers - 1897 - 710 էջ
...device. This ruling applies to joints and splices in all classes of wiring covered by these rules. d. Must be separated from contact with walls, floors...entire length of the hole in one continuous piece, or else the hole must first be bushed by a continuous waterproof tube, which may be a conductor, such... | |
 | American Society of Mechanical Engineers - 1898 - 1122 էջ
...device. This ruling applies to joints and splices in all classes of wiring covered by these rules. d. Must be separated from contact with walls, floors,...nonabsorptive insulating tubes, such as glass or porcelain. Rushings must be long enough to bush the entire length of the hole in one continuous piece, or else... | |
 | Horatio Alvah Foster - 1901 - 1018 էջ
...device. This ruling applies to joints and splices in all classes of wiring covered by these rules. d. Must be separated from contact with walls, floors,...entire length of the hole in one continuous piece, or else the hole must first be bushed by a continuous waterproof tube, which may be a conductor, such... | |
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