A Hand-book of Wiring Tables for Arc, Incandescent Lighting, and Motor CircuitsBubier Publishing Company, 1892 - 76 стор. |
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Сторінка 53
... tube , enter a building , special care must be taken at the point where the conductors leave the tube , and thence to the main cut - out , to protect them in such a manner that they cannot come in contact with each other , nor with the ...
... tube , enter a building , special care must be taken at the point where the conductors leave the tube , and thence to the main cut - out , to protect them in such a manner that they cannot come in contact with each other , nor with the ...
Сторінка 55
... tube , nor in the same slot in a cleat . 31. Cleats should be made of well seasoned hard wood ( filled to prevent the absorption of moisture ) , porcelain or other approved material , and so made as to separate the wire at least one ...
... tube , nor in the same slot in a cleat . 31. Cleats should be made of well seasoned hard wood ( filled to prevent the absorption of moisture ) , porcelain or other approved material , and so made as to separate the wire at least one ...
Сторінка 65
... tube or casing impervious to water , and must be so attached and supported as to be secure from abrasion or other mechanical injury . NOTE . - Rubber tubing will not meet the above require- ments as an insulation . ARC LAMPS . 17. The ...
... tube or casing impervious to water , and must be so attached and supported as to be secure from abrasion or other mechanical injury . NOTE . - Rubber tubing will not meet the above require- ments as an insulation . ARC LAMPS . 17. The ...
Сторінка 66
... tube , and if rigidly and securely sup- ported , and surrounded by and imbedded in a solid insu- lating substance , may lie within one - quarter inch of each other . a 22. When underground service conductors enter building care must be ...
... tube , and if rigidly and securely sup- ported , and surrounded by and imbedded in a solid insu- lating substance , may lie within one - quarter inch of each other . a 22. When underground service conductors enter building care must be ...
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.