A Hand-book of Wiring Tables for Arc, Incandescent Lighting, and Motor CircuitsBubier Publishing Company, 1892 - 76 стор. |
З цієї книги
Результати 1-5 із 15
Сторінка 14
... cent , 10 per cent , or 15 per cent loss . In no case is the safe carrying capacity ( without heating ) of the wire used as a meas- ure of the amount of current to be carried . This carrying capacity of a wire is far in ex- cess of the ...
... cent , 10 per cent , or 15 per cent loss . In no case is the safe carrying capacity ( without heating ) of the wire used as a meas- ure of the amount of current to be carried . This carrying capacity of a wire is far in ex- cess of the ...
Сторінка 15
... loss of but 10 per cent , allowing 45 volts for each lamp . Fifty lamps would require 2250 volts . But only 90 per cent is to be available for lighting purposes , so 2350 volts 2500 volts , the amount the dynamo must supply : 2500-2250 ...
... loss of but 10 per cent , allowing 45 volts for each lamp . Fifty lamps would require 2250 volts . But only 90 per cent is to be available for lighting purposes , so 2350 volts 2500 volts , the amount the dynamo must supply : 2500-2250 ...
Сторінка 16
... loss as low as 5 per cent , while No. 8 is well adapted to half arc circuits . Arc wiring is the simplest to calcu- late ; indeed , often there is no calculation done at all , as one set of figures answers for the entire circuit , but ...
... loss as low as 5 per cent , while No. 8 is well adapted to half arc circuits . Arc wiring is the simplest to calcu- late ; indeed , often there is no calculation done at all , as one set of figures answers for the entire circuit , but ...
Сторінка 18
... cent loss . This will be 12 × .6-7.2 amperes , and the distance 15 feet , per cent loss will 991 available 110 991110.8+ , 110.8-110 - .8 volts lost . R = = ;; = 0.111 ohms for 30 feet- , twice the fifteen feet to allow for the return ...
... cent loss . This will be 12 × .6-7.2 amperes , and the distance 15 feet , per cent loss will 991 available 110 991110.8+ , 110.8-110 - .8 volts lost . R = = ;; = 0.111 ohms for 30 feet- , twice the fifteen feet to allow for the return ...
Сторінка 19
Arthur Eugene Watson. have a capacity for 25 lamps : Let the loss again be per cent . The current will be 25.6 15.0 amperes . 110.8 ( from above ) ÷ 994111.74 volts . 111.74-110.8 - .94 volts . R === . 06266 ohms . For 1000 feet it would ...
Arthur Eugene Watson. have a capacity for 25 lamps : Let the loss again be per cent . The current will be 25.6 15.0 amperes . 110.8 ( from above ) ÷ 994111.74 volts . 111.74-110.8 - .94 volts . R === . 06266 ohms . For 1000 feet it would ...
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A Hand-Book of Wiring Tables for Arc, Incandescent Lighting, and Motor Circuits Arthur Eugene Watson Попередній перегляд недоступний - 2018 |
A Hand-Book of Wiring Tables for ARC, Incandescent Lighting, and Motor Circuits Arthur Eugene Watson Попередній перегляд недоступний - 2015 |
Загальні терміни та фрази
104-volt lamps 16 c. p. lamps 52-volt lamps alternating current amperes Amperex approved insulation arc circuits arc lamps arc system ARC-LIGHT Area in CM=d2 attached to build automatic Board cent loss center of distribution circular mills Cleats Cloth Bound conducting wires conductors covered Diameter in Mils direct current Distance in feet dynamo EDISON SYSTEM edition Edward Trevert electric light wires Electricians electro-motive force England Insurance Exchange enter the building entering buildings erected extra heavy Farad feet from transformer fixtures Formula Hand-book house mains incandescent lamps Incandescent System inflammable material INSIDE WIRING joints line wire located magneto material mechanical injury moisture Nostrand's Science Series number of lamps ohms overhead wires pipe poles porcelain Practical Primary Mains Pure Copper Wire regulations rheostat rubber hooks rules secondary mains secured Series motors size of wire soldered spark arrester supply wires Telegra tion tube two-wire system voltage water-proof insulation Watts WIRING TABLE
Популярні уривки
Сторінка 58 - Flexible cord must not be used except for pendants, wiring of fixtures, portable lamps or motors, portable heating apparatus or other portable devices.
Сторінка 51 - ... c. Must be at least seven feet above the highest point of flat roofs, and at least one foot above the ridge of pitched roofs over which they pass or to which they are attached.