Пошук Зображення Карти Play YouTube Новини Gmail Диск Більше »
Увійти
Книги Книги
" ... b. Must always be placed in dry, accessible places, and be grouped as far as possible. Knife switches must be so placed that gravity will tend to open rather than close the switch. "
Transactions of the American Society of Mechanical Engineers - Сторінка 975
автори: American Society of Mechanical Engineers - 1898
Повний перегляд - Докладніше про цю книгу

New Catechism of Electricity: A Practical Treatise

Nehemiah Hawkins - 1896 - 568 стор.
...been imparted by the handle. d. Must have carrying capacity sufficient to prevent heating. e. Must be placed in dry, accessible places, and be grouped as far as possible, being mounted — when practicable — upon slate or equally non-combustible back boards. Jackknife...
Повний перегляд - Докладніше про цю книгу

Electric Wiring for the Use of Architects, Underwriters, and the Owners of ...

Russell Robb - 1896 - 206 стор.
...been imparted by the handle. d. Must have carrying capacity sufficient to prevent heating. e. Must be placed in dry, accessible places, and be grouped as far as possible, being mounted — when practicable — upon slate or equally non-combustible back boards. Jack-knife...
Повний перегляд - Докладніше про цю книгу

Electric Wiring Specifications for Incandescent Lighting

George H. Kimber - 1896 - 80 стор.
...been imparted by the handle. d. Must have carrying capacity sufficient to prevent heating. e. Must be placed in dry, accessible places, and be grouped as far as possible, being mounted — when practicable — upon slate or equally non-combustible back boards. Jackknife...
Повний перегляд - Докладніше про цю книгу

The National Electrical Code: An Analysis and Explanation of the ...

Richard Henry Pierce - 1896 - 234 стор.
...been imparted by the handle, d. Must have carrying capacity sufficient to prevent heating, e . Must be placed in dry, accessible places and be grouped as far as possible, being mounted, when practicable, upon slate or equally non-combustible back boards Jackknife switches,...
Повний перегляд - Докладніше про цю книгу

Transactions of the American Institute of Electrical Engineers

American Institute of Electrical Engineers - 1897 - 710 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current. 6. Must always be placed in dry. accessible places, and...placed that gravity will tend to open rather than to close the switch. c. Must not be single-pole, except when the circuits which they control supply...
Повний перегляд - Докладніше про цю книгу

Electric Lighting: A Practical Exposition of the Art, for the Use of ..., Том 2

Francis Bacon Crocker - 1901 - 528 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current. b. Must always be placed in dry, accessible places, and...circuits which they control supply not more than six 10-candle power lamps or their equivalent. d. Where flush switches are used, whether with conduit systems...
Повний перегляд - Докладніше про цю книгу

Electrical Engineer's Pocket-book: A Hand-book of Useful Data for ...

Horatio Alvah Foster - 1901 - 1018 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current. 6. Must always be placed in dry, accessible places, and...circuits which they control supply not more than six 16-candle power lamps or their equivalent. d. Where flush-switches are used, whether with conduit systems...
Повний перегляд - Докладніше про цю книгу

International Library of Technology: A Series of Textbooks for ..., Том 13

1902 - 738 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current. b. Must always be placed in dry, accessible places and...than close the switch. c. Must not be single-pole when the circuits that they control supply devices that require over 660 watts of energy or when the...
Повний перегляд - Докладніше про цю книгу

Agents' and Inspectators Pocket-book of Fire Protection

George Velten Steeb - 1902 - 230 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current, and must always be placed in dry, accessible places, and...gravity will tend to open rather than close the switch. Must not be single pole when the circuits which they control supply devices which require over 660...
Повний перегляд - Докладніше про цю книгу

Science and Industry, Том 7

1902 - 750 стор.
...possible to the point where the wires enter the building, and arranged to cut off the entire current Knife switches must be so placed that gravity will tend to open rather than close the switch. They must not be single-pole, except where the circuits which they control supply not more than six...
Повний перегляд - Докладніше про цю книгу




  1. Моя бібліотека
  2. Довідка
  3. Розширений пошук книг
  4. Завантажити ePub
  5. Завантажити файл PDF