Electric Lighting Specifications for the Use of Engineers and Architects |
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Сторінка xi
... 117 Renewal Parts - 117 Summary - - - - - 117 Rules of the National Electric
Light Association ----- us Rules of the National Board of Fire Underwriters -----
140 Rules of the New England Insurance Exchange ----- 154 INTRODUCTION.
... 117 Renewal Parts - 117 Summary - - - - - 117 Rules of the National Electric
Light Association ----- us Rules of the National Board of Fire Underwriters -----
140 Rules of the New England Insurance Exchange ----- 154 INTRODUCTION.
Сторінка 13
They do not in an way take the place of the rules and regulations adopted by
insurance companies and electric light associations, but on the contrary are so
drawn as to depend almost entirely on such rules for the details of method ; such
rules ...
They do not in an way take the place of the rules and regulations adopted by
insurance companies and electric light associations, but on the contrary are so
drawn as to depend almost entirely on such rules for the details of method ; such
rules ...
Сторінка 14
In fact, the conditions under which electric light plants must be installed to meet
the varied requirements arising from the diversity of their application are so
numerous that many of them it is impossible even to mention in a general
specification.
In fact, the conditions under which electric light plants must be installed to meet
the varied requirements arising from the diversity of their application are so
numerous that many of them it is impossible even to mention in a general
specification.
Сторінка 18
The size, character, and position of search lights and projectors will be
determined by local conditions. Permanent signal lights should be provided with
a duplicate light, which is automatically switched into circuit when the first lamp
fails and ...
The size, character, and position of search lights and projectors will be
determined by local conditions. Permanent signal lights should be provided with
a duplicate light, which is automatically switched into circuit when the first lamp
fails and ...
Сторінка 19
In the determination of the number and sizes of dynamos, reference should be
had to the maximum number of lamps that will be lighted at one time, the length
of time of maximum load, the length of time of light load, the day load, possibilities
...
In the determination of the number and sizes of dynamos, reference should be
had to the maximum number of lamps that will be lighted at one time, the length
of time of maximum load, the length of time of light load, the day load, possibilities
...
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Alternating Current ampere meter apparatus appliances approved arc lamps arc light armature attached automatic baseframe belt building c. p. lamps candle power ceiling centre of distribution cleats concealed conductors conduit connections contractor shall furnish covered cross-arms cuits cut-out boxes cut-outs and switches device Direct Current distribution circuits double pole double-pole dynamo efficient electric light engines exciter fastened feeder fixture floor full load fuses fusible gas pipes globe ground heating incandescent lamps inches inclosed incombustible bases joints junction boxes least lightning arresters Low Potential main wires material mechanical injury metal moisture-proof molding necessary non-combustible non-inflammable number of lights number or designation ohms operation outlets pendants placed porcelain possible proper protected pulleys Rating ratus risers rules safety fuse securely separated shunt socket soldered spark arresters specification steam supported switchboard three-wire tion Trade number tube two-wire voltmeter volts walls waterproof insulation
Популярні уривки
Сторінка 128 - Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause trouble on a circuit.
Сторінка 124 - Must be provided with reliable stops to prevent carbons from falling out in case the clamps become loose.
Сторінка 122 - Must be so spliced or joined as to be both mechanically and electrically secure without solder. The joints must then be soldered, to insure preservation, and covered with an insulation equal to that on the conductors.
Сторінка 134 - Must be so suspended that the entire weight of the socket and lamp will be borne by knots under the bushing in the socket, and above the point where the cord comes through the ceiling block or rosette, in order that the strain may be taken from the joints and binding screws.
Сторінка 138 - When current for light and power is taken from primary or secondary batteries, the same general regulations must be observed as apply to similar apparatus fed from dynamo generators developing the same difference of potential.
Сторінка 137 - Must be capable of being disconnected at the power plant, or of being divided into sections, so that, in case of fire on the railway route, the current may be shut off from...
Сторінка 120 - All multiple arc low potential systems (300 volts or less) must be provided with an indicating or detecting device, readily attachable, to afford easy means of testing where the station operates continuously. c. Data obtained from all tests must be preserved for examination by insurance inspectors.
Сторінка 121 - Service blocks must be covered over their entire surface with at least two coats of waterproof paint. 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.
Сторінка 132 - ... 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.
Сторінка 122 - Must be so placed that moisture cannot form a cross connection between them, not less than a foot apart, and not in contact with any substance other than their insulating supports.
Бібліографічна інформація
| Назва | Electric Lighting Specifications for the Use of Engineers and Architects |
| Автор | Earle Abbott Merrill |
| Видавець | W.J. Johnston Company, 1892 |
| Оригінал із | Університет Вісконсин-Медісон |
| Оцифровано | 28 лис. 2007 |
| Обсяг | 176 стор. |
| Експортувати бібліографічний опис | BiBTeX EndNote RefMan |