 | 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... | |
 | 1905 - 484 стор.
...A slate slab is preferable. Special attention is called to the fact that switchboards should not bo 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... | |
 | Howard Monroe Raymond - 1906 - 662 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 (Chicago, Ill.) - 1906 - 528 стор.
...slate slab is preferable. Special attention is called to the fact that switchboards should not 157 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 tho board, and from eighteen to twenty-four... | |
 | 1906 - 590 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 should not be "-iiZ* i .-*-=. - ; -~zf: i>:r. z»:c ^p » tie ctCisg, bat a space of at -.tz. .r Tv-l-* iir^ies *i»;di... | |
 | American School (Lansing, Ill.) - 1907 - 438 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... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1908 - 352 стор.
...switchboard Is of concrete or other fireproof construction, and a spare of three feet, If possible, between the ceiling and the board, In order to prevent fire from communicating from tlio switchboard to the floor or ceiling, and also to prevent the farming of a partially concealed... | |
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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... 
