Electric Lighting SpecificationsW. J. Johnstone Company, Limited, 1892 - 176 стор. |
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Результати 6-10 із 12
Сторінка 123
... tube . 2. Arranged to enter and leave the building through a double contact switch , which will effectually close the main circuit and discon- nect the interior wires when it is turned " off . " The switch must be so constructed that it ...
... tube . 2. Arranged to enter and leave the building through a double contact switch , which will effectually close the main circuit and discon- nect the interior wires when it is turned " off . " The switch must be so constructed that it ...
Сторінка 124
... tube may be prevented . 6. In damp places , attached to glass or porcelain insulators , and separated ten inches or more . 7. When passing through walls , floors , tim- bers , or partitions , treated as in central sta- tions under like ...
... tube may be prevented . 6. In damp places , attached to glass or porcelain insulators , and separated ten inches or more . 7. When passing through walls , floors , tim- bers , or partitions , treated as in central sta- tions under like ...
Сторінка 125
... Underground Conductors . UNDERGROUND CONDUCTORS - Must be : 1. Provided with suitable protecting devices at the ends of tube or conduit services in- side the walls of buildings , as a guard against ELECTRIC LIGHTING SPECIFICATIONS . 125.
... Underground Conductors . UNDERGROUND CONDUCTORS - Must be : 1. Provided with suitable protecting devices at the ends of tube or conduit services in- side the walls of buildings , as a guard against ELECTRIC LIGHTING SPECIFICATIONS . 125.
Сторінка 129
... tube where a current of more than 10 ampères is expected . 6. Depended upon for insulation . The con- ductors must be covered with moisture - proof material . The object of a tube or conduit is to facili- tate the insertion or ...
... tube where a current of more than 10 ampères is expected . 6. Depended upon for insulation . The con- ductors must be covered with moisture - proof material . The object of a tube or conduit is to facili- tate the insertion or ...
Сторінка 131
Earl Abbott Merrill. per cent . less when the wire is closed in a tube or piece of molding than when bare and exposed to the air , when the heat is rapidly radiated . It must be clearly understood that the size of the fuse depends upon ...
Earl Abbott Merrill. per cent . less when the wire is closed in a tube or piece of molding than when bare and exposed to the air , when the heat is rapidly radiated . It must be clearly understood that the size of the fuse depends upon ...
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Age money Alternating Current ampère meter apparatus appliances arc lamps armature attached automatic baseframe bidder shall fill bids building c. p. lamps cables candle power capacity carried ceiling cent centre of distribution cleats conductors conduit connections contractor shall furnish cross-arms cuits cut-out boxes cut-outs and switches Direct Current double-pole dynamo or circuit dynamos Trade number erect the following fastened fill out completely fixture foundation(s full load fuses hand regulator incandescent lamps inches incombustible bases installation insulated wire insulation resistance junction boxes knife switch least lightning arresters main wires ments moisture moisture-proof molding necessary non-combustible number of lights number or designation ohms operation outlets pipes placed plant porcelain potential pressure proper protected pulleys purchaser Rating of exciters riser feeder schedule securely set screws shunt Sockets soldered spark arresters specification steam struction switchboard taps three-wire tightened tion tube two-wire voltage voltmeter volts walls waterproof wire smaller