A Hand-book of Wiring Tables for Arc, Incandescent Lighting, and Motor CircuitsBubier Publishing Company, 1892 - 76 стор. |
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Сторінка 15
... miles equals 42,240 feet , hence the resistance of 1000 feet would be 42240 - .6155 ohms . = Looking at the table on pages 40 and 41 in the column of resistances per 1000 feet , .62849 is the nearest to this number . The size of 15.
... miles equals 42,240 feet , hence the resistance of 1000 feet would be 42240 - .6155 ohms . = Looking at the table on pages 40 and 41 in the column of resistances per 1000 feet , .62849 is the nearest to this number . The size of 15.
Сторінка 17
... in an installation of 100 lamps drawing their current from a center of distri- bution of a capacity of 1000 lamps one - half mile from the station . The distance of the house in question , from this center is 120 feet 17 Three-Wire System,
... in an installation of 100 lamps drawing their current from a center of distri- bution of a capacity of 1000 lamps one - half mile from the station . The distance of the house in question , from this center is 120 feet 17 Three-Wire System,
Сторінка 19
... mile , the length of the circuit will be one mile , or 5280 feet . It is usual to allow more loss in this length than has entered the preceding calculations . Let it . be 8 per cent , leaving 92 per cent as effective for lighting ...
... mile , the length of the circuit will be one mile , or 5280 feet . It is usual to allow more loss in this length than has entered the preceding calculations . Let it . be 8 per cent , leaving 92 per cent as effective for lighting ...
Сторінка 23
... mile from the mains and a loss of 5 per cent permitted . The current to be accommodated will be about 40 amperes . 116 volts . 116-110-6 volts loss . R === . 15 ohms for mile of wire or -.0567 ohms per 1000 feet , 2640 feet . which is ...
... mile from the mains and a loss of 5 per cent permitted . The current to be accommodated will be about 40 amperes . 116 volts . 116-110-6 volts loss . R === . 15 ohms for mile of wire or -.0567 ohms per 1000 feet , 2640 feet . which is ...
Сторінка 26
... miles ( 15840 feet ) from station , with 12 per cent loss . 1300 X 15840 X .008 164736 cir . mills ooo wire . = 3. Required size of wire for 280 104 - volt lamps , 3400 feet distance , 1040 volts ; 8 per cent loss . 280 X 3400 X.15 ...
... miles ( 15840 feet ) from station , with 12 per cent loss . 1300 X 15840 X .008 164736 cir . mills ooo wire . = 3. Required size of wire for 280 104 - volt lamps , 3400 feet distance , 1040 volts ; 8 per cent loss . 280 X 3400 X.15 ...
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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.