 | Nehemiah Hawkins - 1896 - 570 стор.
...PORCELAIN ROSETTE. JIo. 179. ooooOOO RUBBER TUBING. WIRING RULES AND REQUIREMENTS. Ruts 4. SWITCHBOARDS : Section a. Special attention is called to the fact...from communicating from the switchboard to the floor 01 ceiling, and also to prevent the forming of a partially concealed space very liable to be used for... | |
 | Richard Henry Pierce - 1896 - 234 стор.
...placed as to reduce to a minimum the danger of communicating fire to adjacent combustible material Special attention is called to the fact that switchboards should not be built down to the floor, rior up to the ceiling, but a space of at least eighteen inches, or two feet, should be left between... | |
 | American Institute of Electrical Engineers - 1897 - 710 стор.
...placed as to reduce to a minimum the danger of communicating fire to adjacent combustible material. Special attention is called to the fact that switchboards...floor, nor up to the ceiling, but a space of at least ten to twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
 | American Society of Mechanical Engineers - 1898 - 1122 стор.
...placed as to reduce to a minimum the danger of communicating fire to adjacent combustible material. Special attention is called to the fact that switchboards...floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
 | Francis Bacon Crocker - 1901 - 514 стор.
...placed as to reduce to a minimum the danger of communicating tire to adjacent combustible material. Special attention is called to the fact that switchboards...floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen lo twenty-four... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...communicating fire to adjacent combustible material. Special attention is called to the fact tl,at switchboards should not be built down to the floor, nor up to the ceiling, but a space of at lea.st ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
 | Horatio Alvah Foster - 1901 - 1018 стор.
...adjacent combustible material. Special attention is called to the fact that switchboards should riot be built down to the floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
 | Institution of Civil Engineers (Great Britain) - 1901 - 510 стор.
...from generators to switchboards must be readily accessible. Bus bars may be made of bare metal. '• Switchboards should not be built down to the floor, nor up to the ceiling; must be made of incombustible insulating material ; and must be accessible from all sides when the... | |
 | Harry Cooke Cushing - 1902 - 204 стор.
...separated therefrom by a non-inflammable, non-absorptive insulating material. A slate slab is preferable. Special attention is called to the fact that switchboards...floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
 | American School (Lansing, Ill.) - 1903 - 320 стор.
...separated therefrom by a non-inflammable, non-absorptive insulating material. A slate slab is preferable. Special attention is called to the fact that switchboards...floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four... | |
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Special attention is called to the fact that switchboards should not be built down to the floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four inches... 
