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 6
Сторінка 15
... equals 42,240 feet , hence the resistance of 1000 feet would be 42240 - .6155 ohms . = Looking at the table on pages 40 and 41 in the column of resistances per 1000 feet , .62849 is the nearest to this number . The size of 15.
... equals 42,240 feet , hence the resistance of 1000 feet would be 42240 - .6155 ohms . = Looking at the table on pages 40 and 41 in the column of resistances per 1000 feet , .62849 is the nearest to this number . The size of 15.
Сторінка 44
... equal to the E. M. F. acting on it divided by its resistance . VOLT . The unit of electro - motive force or pressure analogous to the head of water in hydraulics . WATT . - -The unit of work . 746 4 44 Conductors, Electrical Units,
... equal to the E. M. F. acting on it divided by its resistance . VOLT . The unit of electro - motive force or pressure analogous to the head of water in hydraulics . WATT . - -The unit of work . 746 4 44 Conductors, Electrical Units,
Сторінка 45
... equal We may find the Watts used in a circuit by three formulae , thus : Watts = Amperes ( squared ) × ohms . Watts = Amperes × volts . Watts Volts ( squared ) by ohms . Onethousandth MILLI - AMPERE.- One - millionth ampere and - is ...
... equal We may find the Watts used in a circuit by three formulae , thus : Watts = Amperes ( squared ) × ohms . Watts = Amperes × volts . Watts Volts ( squared ) by ohms . Onethousandth MILLI - AMPERE.- One - millionth ampere and - is ...
Сторінка 46
... equal to that of the conducting wires . 2. All joints must be so made that a perfectly secure and unvarying connection , fully equal to the cross - section of the conducting wire will be secured - and they should be soldered . Resin ...
... equal to that of the conducting wires . 2. All joints must be so made that a perfectly secure and unvarying connection , fully equal to the cross - section of the conducting wire will be secured - and they should be soldered . Resin ...
Сторінка 51
... equal to that of the conducting wires . 2 All joints must be so made that a perfectly secure and unvarying connection , fully equal to the cross - section of the conducting wire , will be secured - and they should be soldered . All ...
... equal to that of the conducting wires . 2 All joints must be so made that a perfectly secure and unvarying connection , fully equal to the cross - section of the conducting wire , will be secured - and they should be soldered . All ...
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.