Electric Wiring for the Use of Architects, Underwriters, and the Owners of BuildingsMacmillan and Company, 1896 - 183 стор. |
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Результати 6-10 із 36
Сторінка 75
... fuse , " or piece of easily fus- ible metal , will form a part of the circuit . When the current becomes too great , the fuse melts , because of the heat that the current gener- FIG . 22. - Double - pole Cut - out . ates in it , and the ...
... fuse , " or piece of easily fus- ible metal , will form a part of the circuit . When the current becomes too great , the fuse melts , because of the heat that the current gener- FIG . 22. - Double - pole Cut - out . ates in it , and the ...
Сторінка 76
... fuse is single- pole , that is , acting on one wire of the circuit only . A heavy current flowing through the circuit will , of course , melt the fuse and the flow be stopped . But suppose that the fuse is just inside the wall of the ...
... fuse is single- pole , that is , acting on one wire of the circuit only . A heavy current flowing through the circuit will , of course , melt the fuse and the flow be stopped . But suppose that the fuse is just inside the wall of the ...
Сторінка 104
... fuses and cut - outs . The cut - out required by this section must be placed so as to protect the switch required by Rule 17. ] The conditions to which outside wires are exposed are such 104 ELECTRIC WIRING . Class C Low-Potential Systems.
... fuses and cut - outs . The cut - out required by this section must be placed so as to protect the switch required by Rule 17. ] The conditions to which outside wires are exposed are such 104 ELECTRIC WIRING . Class C Low-Potential Systems.
Сторінка 106
... fuses must be placed as near as possible to the end of the underground conduit and con- nected therewith by specially insulated conductors , kept apart not less than two and one - half inches . [ Section b . The cut - out required by ...
... fuses must be placed as near as possible to the end of the underground conduit and con- nected therewith by specially insulated conductors , kept apart not less than two and one - half inches . [ Section b . The cut - out required by ...
Сторінка 107
... fuse and is in reality only another name for a fuse - box . The term is applied usually only to the fuse receptables in the underground street service . In making the street connections the wires are sometimes improperly con- nected so ...
... fuse and is in reality only another name for a fuse - box . The term is applied usually only to the fuse receptables in the underground street service . In making the street connections the wires are sometimes improperly con- nected so ...
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Electric Wiring for the Use of Architects, Underwriters, and the Owners of ... Russell Robb Попередній перегляд недоступний - 2016 |
Загальні терміни та фрази
air-space alternating currents ampères approved arc lamp arc-light attached batteries become break building burn by-path carbons carrying capacity cause combustible material concealed conductors conduit connection construction copper copper wire cross-connection cuit current passes damp danger devices direct current double-pole ductors dynamo earth elec electric circuit electrical pressure electro-motive force energy excessive current exposed fastened fire fixture floor flow fuse fusible cut-out gas-pipe glass or porcelain globe ground hanger-board heat high-potential incandescent lamps inch inflammable inflammable material Inigo Jones installed insulating covering Insulating-joints leak leakage liable light lightning-arrester low-potential mains melt metal moisture motor multiple system multiple-series necessary neutral wire operated path pipe placed possible potential prevent protected resistance-box rheostat Rule 18 Section series circuits service-switch short circuit socket soldered space switch switch-board temperature tion transformer trical tube underwriters volts W. J. LOFTIE walls waterproof wires leading
Популярні уривки
Сторінка 127 - Definitions). b. Must be placed at every point where a change is made in the size of the wire (unless the cut-out in the larger wire will protect the smaller).
Сторінка 67 - Must be placed on the switch board, or, if not thereon, at a distance of a foot from combustible material, or separated therefrom by a non-inflammable, non-absorptive, insulating material.
Сторінка 140 - No combination fixture in which the conductors are concealed in a space less than one-fourth inch between the inside pipe and the outside casing, will be approved. h. Each fixture must be tested for "contacts...
Сторінка 79 - VOLTS. Any circuit attached to any machine or combination of machines which develops a difference of potential, between any two wires, of over...
Сторінка 64 - Special attention is called to the fact that switchboards should not be built down to the floor, nor up to the ceiling, but a space of at least ten or twelve inches should be left between the floor and the board, and from eighteen to twenty-four inches between the ceiling and the board, in order to prevent fire from communicating from the switchboard to the floor or ceiling and also to prevent the forming of a partially concealed space very...
Сторінка 121 - ... b. Must not be placed in the immediate vicinity of easily ignitible stuff or where exposed to inflammable gases or dust or to flyings of combustible material.
Сторінка 112 - 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 135 - ... capacity of the wire is exceeded. 25. TABLE OF CAPACITY OF WIRES:— It must be clearly understood that the size of the fuse depends upon the size of the smallest conductor it protects, and not upon the amount of current to be used on the circuit. Below is a table showing the...
Сторінка 87 - 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 123 - ... the conductors, and the conductors then to be pushed or fished in. The conductors must not be placed in position until all mechanical work on the building has been, as far as possible, completed. d. Must not be so placed as to be subject to mechanical injury by saws, chisels, or nails.