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 18
... located on four floors , 25 lamps on each . The center of the room to which the current is brought is 50 feet from the main junction boxes for each floor . Each lamp is wired separately to the supply wires , there being no groups or ...
... located on four floors , 25 lamps on each . The center of the room to which the current is brought is 50 feet from the main junction boxes for each floor . Each lamp is wired separately to the supply wires , there being no groups or ...
Сторінка 19
... located was called one - half 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 ...
... located was called one - half 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 ...
Сторінка 23
... located one - fourth 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 ...
... located one - fourth 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 ...
Сторінка 50
... located in dry places , not 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 ...
... located in dry places , not 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 ...
Сторінка 58
... insulation is necessary , it must be placed outside the two conductors , and must in all cases be covered with a non - inflammable outside coating , to prevent cord from carrying fire . DYNAMOS AND MOTORS . 63. They must be located in 58.
... insulation is necessary , it must be placed outside the two conductors , and must in all cases be covered with a non - inflammable outside coating , to prevent cord from carrying fire . DYNAMOS AND MOTORS . 63. They must be located in 58.
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.