Measure Insulation Resistance of Motor Small 320×79 Medium 640×158 Large 1024×253 Download Tiff Original 2400×594 | (137.6 KB) Description "Testing the insulation resistance of a motor or generator from its winding to ground." —Croft 1920 Keywords generator, ground, insulation, measure, motor, resistance, test, winding Galleries Electricity Experiments and Apparatus Source: Terrel Croft Library of Practical Electricity Volume Six: Wiring for Light and Power (New York: McGraw-Hill Book Company, Inc., 1920) 441 Courtesy the private collection of Roy Winkelman
