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 20
Сторінка 47
... buildings , and at the point where they enter a building , must not be less than twelve inches apart . They must be rigidly and neatly run , and supported by glass or porcelain insulators , or rubber hooks . The rubber hooks must be of ...
... buildings , and at the point where they enter a building , must not be less than twelve inches apart . They must be rigidly and neatly run , and supported by glass or porcelain insulators , or rubber hooks . The rubber hooks must be of ...
Сторінка 48
... building through an approved cut - out switch . 14. The cut - out switch must be " double contact , " and should effectually close the main circuit , and cut off the interior , when turned " off . " It must be so constructed that there ...
... building through an approved cut - out switch . 14. The cut - out switch must be " double contact , " and should effectually close the main circuit , and cut off the interior , when turned " off . " It must be so constructed that there ...
Сторінка 50
... building . The same precautions must be observed in entering the building that are required for lighting circuits . 30 . TESTING . All circuits should be tested at least twice a day with a suitable magneto , or other approved device ...
... building . The same precautions must be observed in entering the building that are required for lighting circuits . 30 . TESTING . All circuits should be tested at least twice a day with a suitable magneto , or other approved device ...
Сторінка 51
... build- ings , must be at least seven feet above the highest point of flat roofs , and one foot above the ridge of pitch roofs . Lines constructed subsequent to the adoption of these regulations should not be run over and attached to build ...
... build- ings , must be at least seven feet above the highest point of flat roofs , and one foot above the ridge of pitch roofs . Lines constructed subsequent to the adoption of these regulations should not be run over and attached to build ...
Сторінка 52
... buildings , must be separated by a distance of not less than six inches , for currents having an electro - motive force ... building , and the holes through which they enter should , where possible , slant upward . If an approved glass ...
... buildings , must be separated by a distance of not less than six inches , for currents having an electro - motive force ... building , and the holes through which they enter should , where possible , slant upward . If an approved glass ...
Інші видання - Показати все
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.