Agents' and Inspectators Pocket-book of Fire ProtectionSpectator Company, 1902 - 218 стор. |
З цієї книги
Результати 1-5 із 19
Сторінка 10
... cut off from the remainder of the building by fireproof partitions ; the framework , and all parts of the stairs and ... cut - off walls 4 inches thicker than the out- side walls at each floor : all exposed outside walls and all party ...
... cut off from the remainder of the building by fireproof partitions ; the framework , and all parts of the stairs and ... cut - off walls 4 inches thicker than the out- side walls at each floor : all exposed outside walls and all party ...
Сторінка 12
... cutting off of draught spaces , i . e . , continuous concealed spaces in the ... out the thickness of the furring , to more effectually pre- vent the spread ... cut off the continuous hollow space at this point ; this will prevent ...
... cutting off of draught spaces , i . e . , continuous concealed spaces in the ... out the thickness of the furring , to more effectually pre- vent the spread ... cut off the continuous hollow space at this point ; this will prevent ...
Сторінка 46
George Velten Steeb. in an old opening , the opening should be cut larger ... away , cannot be properly put on the woodwork , and buckle and bend with ... out and drop the metal from the wood . Sheet metal put on woodwork otherwise ...
George Velten Steeb. in an old opening , the opening should be cut larger ... away , cannot be properly put on the woodwork , and buckle and bend with ... out and drop the metal from the wood . Sheet metal put on woodwork otherwise ...
Сторінка 75
... Cut - out . — A double pole , or two single , cut - out must be located in similar manner to the switch , so as to afford protection against excessive current . The ordinary lightning fuse blocks are not desirable for this work , as the ...
... Cut - out . — A double pole , or two single , cut - out must be located in similar manner to the switch , so as to afford protection against excessive current . The ordinary lightning fuse blocks are not desirable for this work , as the ...
Сторінка 80
... cut- out boxes , or like places where a less distance is necessary ; must , on side walls , be protected from mechanical injury by a substan- tial boxing , retaining an air space of one inch around the con- ductors , closed at the top ...
... cut- out boxes , or like places where a less distance is necessary ; must , on side walls , be protected from mechanical injury by a substan- tial boxing , retaining an air space of one inch around the con- ductors , closed at the top ...
Загальні терміни та фрази
amperes apparatus appliances approved arc lamps arranged asbestos attached automatic sprinkler benzine Board of Fire boiler bolts brick building burners capacity ceiling cement check valve circuit closed coating conductors connections construction cornice covered cut-out cylinders diameter discharge dryer dust dynamo electric elevator exposed factories fastened feet fire doors fire pump Fire Underwriters fireproof fixture floor fuse fusible link gallons gasolene gate valve glass grain grain dryers hazards heat hose hydrant inches inflammable materials inside installed insulating joints joists lamps laths leaking least less liable light located machines metal mills moisture naphtha National Board non-combustible paint partitions placed possible pounds pressure prevent protected rheostat riser riveted roof securely shaft shutters side solder steam pipes stoves suction pipe supply supported switch tank terra cotta tubes ventilated vertical volts wall frame wires wood wooden woodwork wrought iron
Популярні уривки
Сторінка 79 - The lower limit is specified for rubber-covered wires to prevent gradual deterioration of the high insulations by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tables.
Сторінка 102 - They must not come nearer than two inches to any electric light or power wire in the building, unless separated therefrom by some continuous and firmly fixed non-conductor creating a permanent separation ; this non-conductor to be in addition to the regular insulation on the wire.
Сторінка 80 - VOLTS. Any circuit attached to any machine or combination of machines which develops a difference of potential, between any two wires, of over...
Сторінка 81 - Rigid supporting requires under ordinary conditions, where wiring along flat surfaces, supports at least every four and one-half feet. If the wires are liable to be disturbed, the distance between supports should be shortened. In buildings of mill construction, mains of No.
Сторінка 103 - Insulation Resistance — The wiring in any building must test free from grounds; ie, the complete installation must have an insulation between conductors and between all conductors and the ground (not including attachments, sockets, receptacles, etc.) of not less than the following: Up to 5 amperes 4,000,000 ohms...
Сторінка 83 - ... a highpotential circuit and as coming under that class, unless an approved transforming device is used which cuts the difference of potential down to 550 volts or less.
Сторінка 82 - ... except that if the difference of potential between the wires is not over 300 volts, and if the wires are not exposed to moisture, they may be fished...
Сторінка 106 - 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. This tube may be a conductor, such as iron pipe, but in that case an insulating bushing...
Сторінка 88 - Must be placed on all service wires, either overhead or underground, as near as possible to the point where they enter the building and inside the walls, and arranged to cut off the entire current from the building.
Сторінка 91 - Hanger-boards must be so constructed that all wires and current-carrying devices thereon shall be exposed to view, and thoroughly insulated by being mounted on a non-combustible, non-absorptive insulating substance. All switches attached to the same must be so constructed that they shall be automatic in their action, cutting off both poles to the lamp, not stopping between points when started, and preventing an arc between points under all circumstances.