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
... least resistance , yet they have to be subject to careful calculation that there may be no un- due waste of energy or material . Such mas- sive bars of copper might be used that the loss in conveying the current through them would be ...
... least resistance , yet they have to be subject to careful calculation that there may be no un- due waste of energy or material . Such mas- sive bars of copper might be used that the loss in conveying the current through them would be ...
Сторінка 14
... least 75 per cent of the whole voltage of the dynamo . Arc and incandescent lighting and motors require different systems of wiring , and under each head peculiarities will be described and illustrations of calculating given . ARC ...
... least 75 per cent of the whole voltage of the dynamo . Arc and incandescent lighting and motors require different systems of wiring , and under each head peculiarities will be described and illustrations of calculating given . ARC ...
Сторінка 47
... least two coats of water - proof paint over their entire surface ; and when used to support rubber hooks , must have at least one inch of wood between the inner end of the hook and the back of the block . 9. For entering buildings ...
... least two coats of water - proof paint over their entire surface ; and when used to support rubber hooks , must have at least one inch of wood between the inner end of the hook and the back of the block . 9. For entering buildings ...
Сторінка 48
... least twelve inches . 17. In perfectly dry places wires may be supported by cleats of wood ( filled to prevent the absorption of moist- ure ) or porcelain . Cleats should be so made as to sepa- rate the wire at least one - fourth of an ...
... least twelve inches . 17. In perfectly dry places wires may be supported by cleats of wood ( filled to prevent the absorption of moist- ure ) or porcelain . Cleats should be so made as to sepa- rate the wire at least one - fourth of an ...
Сторінка 50
... least twelve inches from each other , and must be pro- vided with an approved cut - out switch at the point where they enter the building . The same precautions must be observed in entering the building that are required for lighting ...
... least twelve inches from each other , and must be pro- vided with an approved cut - out switch at the point where they enter the building . The same precautions must be observed in entering the building that are required for lighting ...
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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.