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 13
... material . Such mas- sive bars of copper might be used that the loss in conveying the current through them would be inappreciable , but the interest on the money invested in such amounts of metal would be prohibitive . The flow of ...
... material . Such mas- sive bars of copper might be used that the loss in conveying the current through them would be inappreciable , but the interest on the money invested in such amounts of metal would be prohibitive . The flow of ...
Сторінка 46
... material of high insulating power , not easily abraded ; they must be firmly secured to properly insu- lated and substantially built supports . All tie wires must have an insulation equal to that of the conducting wires . 2. All joints ...
... material of high insulating power , not easily abraded ; they must be firmly secured to properly insu- lated and substantially built supports . All tie wires must have an insulation equal to that of the conducting wires . 2. All joints ...
Сторінка 49
... material is near or under the lamp , the globe must be protected by a wire netting . Unless a very high globe , which closes in as far as possible at the top , is used , it must be provided with some protector or spark arrester ...
... material is near or under the lamp , the globe must be protected by a wire netting . Unless a very high globe , which closes in as far as possible at the top , is used , it must be provided with some protector or spark arrester ...
Сторінка 50
... 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 device , or a competent person must be ...
... 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 device , or a competent person must be ...
Сторінка 51
... material of high insulating power , not easily abraded , and they must be firmly secured to properly insu- lated and substantially built supports . All the wires must have an insulation equal to that of the conducting wires . 2 All ...
... material of high insulating power , not easily abraded , and they must be firmly secured to properly insu- lated and substantially built supports . All the wires must have an insulation equal to that of the conducting wires . 2 All ...
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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.