Discussion on “temperature and electrical insulation” (Steinmetz and Lamme) and “method of rating electrical apparatus” (Merrill, Powell and Robbins). New York, February 26, 1913. (see proceedings for February, 1913)

F. B. Crocker (by letter): The paper on “Method of Rating Electrical Apparatus” by Messrs. Merrill, Powell and Robbins, Sub-Committee on Rating, states that it is “recommended that no overloads be specified for apparatus except momentary overloads. Momentary overloads are defined as not exceeding 60 seconds” and are 150 per cent of normal rated torque or current.