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 14
Сторінка 20
... balance between the number of lamps on both sides of the " neu- tral " wire . At the best there is a saving of one wire , and the use of lamps of practically twice the ordinary potential . The figuring will be the 20.
... balance between the number of lamps on both sides of the " neu- tral " wire . At the best there is a saving of one wire , and the use of lamps of practically twice the ordinary potential . The figuring will be the 20.
Сторінка 21
Arthur Eugene Watson. twice the ordinary potential . The figuring will be the same as for two ordinary two - wire systems , but with one wire in common . The principle of this system has been extended to four - wire and five - wire ...
Arthur Eugene Watson. twice the ordinary potential . The figuring will be the same as for two ordinary two - wire systems , but with one wire in common . The principle of this system has been extended to four - wire and five - wire ...
Сторінка 22
... potential mains , and in such cases need a rheostat in the circuit to be used in starting only . In constant potential mains when shunt motors are used a rheostat must always be used in starting . The wiring can be figured on the same ...
... potential mains , and in such cases need a rheostat in the circuit to be used in starting only . In constant potential mains when shunt motors are used a rheostat must always be used in starting . The wiring can be figured on the same ...
Сторінка 50
... potential for lighting . 29. The wires leading to motors should be separated at least twelve inches from each other , and must be pro- vided with an approved cut - out switch at the point where they enter the building . The same ...
... potential for lighting . 29. The wires leading to motors should be separated at least twelve inches from each other , and must be pro- vided with an approved cut - out switch at the point where they enter the building . The same ...
Сторінка 52
... potential . 8. They must also be rigidly and neatly run , and must be supported by glass or porcelain insulators , or by rub- ber hooks . Rubber hooks must be of an approved pat- tern ; i . e . , with the rubber insulation free from ...
... potential . 8. They must also be rigidly and neatly run , and must be supported by glass or porcelain insulators , or by rub- ber hooks . Rubber hooks must be of an approved pat- tern ; i . e . , with the rubber insulation free from ...
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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.