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 8
Сторінка 49
... exposed to disturbance or mechanical injury . ARC LAMPS . 20. The frames and other exposed parts of arc lamps must be carefully insulated from the circuit . 21. Each lamp must be provided with a proper hand switch , and also with an ...
... exposed to disturbance or mechanical injury . ARC LAMPS . 20. The frames and other exposed parts of arc lamps must be carefully insulated from the circuit . 21. Each lamp must be provided with a proper hand switch , and also with an ...
Сторінка 50
... exposed to the flyings of combustible material , and must be insulated upon dry wood , filled to prevent absorption of moisture . They must be kept thoroughly clean and dry . They must be provided with a reliable automatic regulating ...
... exposed to the flyings of combustible material , and must be insulated upon dry wood , filled to prevent absorption of moisture . They must be kept thoroughly clean and dry . They must be provided with a reliable automatic regulating ...
Сторінка 55
... exposed to mechanical injury , or to disturbance of any kind . 28. Metallic staples must never be used ; when staples are used , they must be of an approved insulating mate- rial . 29. None but an approved tubing will be accepted as a ...
... exposed to mechanical injury , or to disturbance of any kind . 28. Metallic staples must never be used ; when staples are used , they must be of an approved insulating mate- rial . 29. None but an approved tubing will be accepted as a ...
Сторінка 58
... exposed to contact with outside objects will be allowed to come into electrical connection with either of the conducting wires . 56. Cord pendants must be protected by hard rubber bushing , or something equally good , where they enter ...
... exposed to contact with outside objects will be allowed to come into electrical connection with either of the conducting wires . 56. Cord pendants must be protected by hard rubber bushing , or something equally good , where they enter ...
Сторінка 59
... exposed to flyings of combustible material , and must be insulated upon dry wood , filled to prevent absorption of mois- ture . They must be kept thoroughly clean and dry . They must be self - regulating , or a competent person must be ...
... exposed to flyings of combustible material , and must be insulated upon dry wood , filled to prevent absorption of mois- ture . They must be kept thoroughly clean and dry . They must be self - regulating , or a competent person must be ...
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.