Electric Lighting SpecificationsW. J. Johnstone Company, Limited, 1892 - 176 стор. |
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Сторінка 13
... shall be followed . It is not expected that these specifications will be followed in detail or without elabora- tion for all classes of work , and if so followed will lead into serious error , but they are put Introduction.
... shall be followed . It is not expected that these specifications will be followed in detail or without elabora- tion for all classes of work , and if so followed will lead into serious error , but they are put Introduction.
Сторінка 15
... tion must be made out for each installation . For whatsoever purpose the plant is installed , however , safety and reliability should be the first considerations . On account of the disas- trous results that might accompany the extin ...
... tion must be made out for each installation . For whatsoever purpose the plant is installed , however , safety and reliability should be the first considerations . On account of the disas- trous results that might accompany the extin ...
Сторінка 19
... tion for a particular purpose , a careful dis- tinction should be made between so - called " weather proof , " " moisture proof , " and " rub- ber covered " insulations , bearing in mind the seemingly paradoxical fact that a " weather ...
... tion for a particular purpose , a careful dis- tinction should be made between so - called " weather proof , " " moisture proof , " and " rub- ber covered " insulations , bearing in mind the seemingly paradoxical fact that a " weather ...
Сторінка 20
... tion of the allowable variation in pressure or maximum difference of potential , especially in large isolated plants , between the centre of distribution and the farthest lamp in the installation . No fixed or arbitrary rule can be laid ...
... tion of the allowable variation in pressure or maximum difference of potential , especially in large isolated plants , between the centre of distribution and the farthest lamp in the installation . No fixed or arbitrary rule can be laid ...
Сторінка 23
... tion of the risers , and of knowing their exact position before making an estimate . Of no less importance is the position of all outlets and the number of lights per outlet , since this determines the number of circuits , the lengths ...
... tion of the risers , and of knowing their exact position before making an estimate . Of no less importance is the position of all outlets and the number of lights per outlet , since this determines the number of circuits , the lengths ...
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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