search and the accumulated knowledge of recognized experts. A study of its rules and requirements has been often urged upon central station men and engineers. Insurance companies and their representatives, meanwhile, have come to look to the Code for instruction and guidance, but without knowing why or wherefore. The whys and wherefores are clearly set forth in the following pages; and now that Electricity is coming into general use, the necessity of a better knowledge of electrical hazards is freely admitted by all those engaged in fire insurance. Supplemental to the general exposition, properly classified and indexed, is the "Appendix," in which will be found tables and curves for measuring wires, and the full text of the Underwriters' National Electrical Code for 1896. The writings of Messrs. Pierce and Richardson, it is proper to add, have attracted the favorable notice of prominent underwriters, architects, builders and engineers. It is believed that this little book will prove indispensable to most insurance inspectors and special agents, and of practical interest and value to many electricians. CHICAGO, NOVEMBER, 1896. C. A. H. Arc Lamps - Spark Arresters Hanger Boards -Auto- matic Switches Suspension of Arc Lamps - Incandes- Underground Conductors - Inside Wiring. General Rules - Insulation of Wires -Minimum Size of Wires - Tubes or Bushings - Protection of Low Potential from High Potential Wires - Joints in Wires and in Insulation, 73 to 83 CLASS C Low POTENTIAL SYSTEMS. PART III. Special Rules - Wiring Not Encased in Moulding or -out Boxes - Maximum Safe Carrying SYSTEMS, CONVERTERS OR TRANSFORMERS. nating Currents - Transmission of Short Circuit - Insulation Resistance Required by Code, (Table)-Ground Wires-Protection of Telephone, Clock - Changes from Code of 1895 - Mechanical Protection of - - - Heaters - New List of Approved Wires - The Object |