table of carrying capacities, page 38. This table is taken from the rules of the National Board of Fire Underwriters, and is in general use. The first three of the following tables are wiring tables for the three standard voltages, 110, 220, 500. From these tables can be found the sizes of wire equired to carry various amounts of current (in amperes) different distances (in feet) at several percentages of loss, or the distance the different sizes of wire will carry various amounts of current at several percentages of loss can be found. These tables are figured on safe carrying capacity for the different sizes of wire. The distances in feet are to the center of distribution. |