A Hand-book of Wiring Tables for Arc, Incandescent Lighting, and Motor CircuitsBubier Publishing Company, 1892 - 76 стор. |
З цієї книги
Результати 6-9 із 9
Сторінка 58
... 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.
... 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.
Сторінка 69
... carrying capacity . 43. The safe carrying capacity of a wire is the current which it will convey without becoming painfully warm when grasped for a minute in the closed hand . CUT - OUT BOXES OR SWITCHES . 44. All cut - out boxes or ...
... carrying capacity . 43. The safe carrying capacity of a wire is the current which it will convey without becoming painfully warm when grasped for a minute in the closed hand . CUT - OUT BOXES OR SWITCHES . 44. All cut - out boxes or ...
Сторінка 70
... carrying cur- rents of more than 250 volts difference of potential be- tween any two parts of the system , even if such current is used to run incandescent lamps . 48. Low potential currents or wires are such as do not carry currents of ...
... carrying cur- rents of more than 250 volts difference of potential be- tween any two parts of the system , even if such current is used to run incandescent lamps . 48. Low potential currents or wires are such as do not carry currents of ...
Сторінка 72
... carrying not more than two electric light wires shall be twenty - five feet high , straight , uniform in size , and painted from top to bottom ― a very dark color from the sidewalk to a point eight feet high , and a dark green color ...
... carrying not more than two electric light wires shall be twenty - five feet high , straight , uniform in size , and painted from top to bottom ― a very dark color from the sidewalk to a point eight feet high , and a dark green color ...
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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.