Standard Tables for Electric Wiremen: With Instructions for Wiremen and Linemen, Underwriters' Rules, and Useful Formulæ and Data |
Other editions - View all
Standard Tables for Electric Wiremen. with Instructions for Wiremen and ... William Dixon Weaver,Charles M. Davis No preview available - 2018 |
Standard Tables for Electric Wiremen. With Instructions for Wiremen and ... William Dixon Weaver,Charles M Davis No preview available - 2023 |
Standard Tables for Electric Wiremen. with Instructions for Wiremen and ... William Dixon Weaver,Charles M. Davis No preview available - 2015 |
Common terms and phrases
18 lamps 20 feet address on receipt Alternating Currents Amperes approved insulating ARC LAMPS Battery boiler branch building calculate CARL HERING cent of Loss circuit circular mils Cloth combustible material conductors connected constructed converter copper cut-out device diameter Distance between Wires distributing point double-pole ductors dynamo electric light Electric Railway Electricians Electromagnets Elihu Thomson equivalent exposed to dampness feeder fixture floor formula fuses fusible glass or porcelain ground Horse-power illus illustrations inches Inspector insulating covering insulating material insulating resistance JOHN HOPKINSON joint lamp centre least liable LOUIS BELL magnets Mailed prepaid metal moisture NIKOLA TESLA non-combustible NUMBER OF LAMPS Ohms paint PERIODS PER SECOND pipes placed poles porcelain potential Practical Price Primers Prof protected Publishers pulley Quadruplex Railway DIRECTORY revolutions rheostat RULE Section socket solder STATIONS Street Railway switch tape Telegraph Telephone tion VOLTS W. J. JOHNSTON COMPANY waterproof
Popular passages
Page 71 - ... 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.
Page 77 - 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. e. Must be tested for "contacts" between conductors and fixtures, for "short circuits" and for ground connections before it is connected to its supply conductors.
Page 94 - 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...
Page 74 - 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 safe carrying capacity of conductors of different sizes in Brown & Sharpe gauge, which must be followed in the placing of interior conductors: — TABLE A, CONCEALED WORK.
Page 69 - 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.
Page 128 - The Electric Motor and Its Applications. By TC Martin and Jos. Wetzler. With an appendix on the Development of the Electric Motor since 1888, by Dr, Louis Bell.
Page 72 - Must not be of such material or construction that the insulation of the conductor will ultimately be injured or destroyed by the elements of the composition. c. Must be first installed as a complete conduit system, •without conductors, strings or anything for the purpose of drawing in 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...
Page 65 - 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.
Page 58 - CARE AND ATTENDANCE: A competent man must be kept on duty in the room where generators are operating. Oily waste must be kept in approved metal cans and removed daily.
Page 90 - The insulating covering of the wire to be approved under this section must be solid, at least -fa of an inch in thickness and covered with a substantial braid. It must not readily carry fire, must show an insulating resistance of one megohm per mile after two weeks...