Electric Light Fitting; A Handbook for Working Electrical Engineers, Embodying Practical Notes on Installation Management

Electric Light Fitting; A Handbook for Working Electrical Engineers, Embodying Practical Notes on Installation Management

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...experiments of the kind. Gas fittings are not necessarily conductive throughout--joints are generally faulty points. But such a fitting as a chandelier may generally be made to serve as a " return," within itself only. That is, the two wires are brought to it, and one of them soldered to the ceiling fixture of the pendant, the other being taken downward to the lamps. Wire for this purpose must be very heavily insulated, and it must not be led or drawn over sharp angles of the metal, otherwise it may set up short-circuiting. When gas fixtures are to carry electric lamps only, the gas pipes should be disconnected from them, otherwise short circuits are apt to be got throughout the system. If both gas and electricity are to be used, the fixtures should not, except within themselves, be used for return, and in any case it will be essential to observe that the negative wire (if that wire be regarded as the " return ") is in every case soldered to the fixture, and not any wire at random, whether negative or positive. Insulated joints for insertion in gas systems are coming into use for cutting each fixture off electrically from the main system of pipes. The gas supply is kept up through a tube of insulating material. All electric light wires must be kept a safe distance from gas or water pipes. A fusible plug must be placed in the ceiling plate, above each pendant carrying more than one light. It may be broadly stated that all electric light fixtures must be insulated from any metallic support they may have. In the ordinary wiring of a chandelier the lead and branches are simply led along the course of the arms, concealed as much as possible. If the wires can be completely concealed, that is done by inserting them beneath the...show more

Product details

  • Paperback | 96 pages
  • 189 x 246 x 5mm | 186g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236487028
  • 9781236487025