Electric Lighting SpecificationsW. J. Johnstone Company, Limited, 1892 - 176 стор. |
З цієї книги
Результати 11-15 із 15
Сторінка 161
... wire must not be used except ( a ) as allowed in " conduit " wiring , ( b ) or for " pendants , " fixture wiring ... small current . 24. The safe carrying capacity of wires when exposed to the air may be taken from the following table ...
... wire must not be used except ( a ) as allowed in " conduit " wiring , ( b ) or for " pendants , " fixture wiring ... small current . 24. The safe carrying capacity of wires when exposed to the air may be taken from the following table ...
Сторінка 167
... small wires to each light cannot always have cut - outs . Care should be taken , however , that the last controlling cut- out ( a ) carries as small an amount as practi- cable , and ( b ) that it will act before the small- est wire runs ...
... small wires to each light cannot always have cut - outs . Care should be taken , however , that the last controlling cut- out ( a ) carries as small an amount as practi- cable , and ( b ) that it will act before the small- est wire runs ...
Сторінка 168
... wires are at- tached must be insulated from the piping of the building by an insulating joint . ( b ) Burrs and sharp ... wire smaller than No. 16 B. & S. or No. 18 B. W. G. must be used in fixture wiring . 1 Electric Gas - Lighting . 50 ...
... wires are at- tached must be insulated from the piping of the building by an insulating joint . ( b ) Burrs and sharp ... wire smaller than No. 16 B. & S. or No. 18 B. W. G. must be used in fixture wiring . 1 Electric Gas - Lighting . 50 ...
Сторінка 169
... wiring for the electric light ; ( d ) the whole installation must test free of grounds , and ( e ) the two ... wire smaller than No. 12 B. & S. must be used ; ( b ) there must be a double pole cut - out at the junction of the ...
... wiring for the electric light ; ( d ) the whole installation must test free of grounds , and ( e ) the two ... wire smaller than No. 12 B. & S. must be used ; ( b ) there must be a double pole cut - out at the junction of the ...
Сторінка 174
... wire must be rigidly supported ( c ) on porcelain , glass , or other non ... small motors for fans and the like on low potential lighting circuits , the ... wire is carried to a ground outside of the building 174 ELECTRIC LIGHTING ...
... wire must be rigidly supported ( c ) on porcelain , glass , or other non ... small motors for fans and the like on low potential lighting circuits , the ... wire is carried to a ground outside of the building 174 ELECTRIC LIGHTING ...
Інші видання - Показати все
Загальні терміни та фрази
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