Selecting inherent overheat protectors

Approximately 40 per cent of all fractional horsepower motors of one-eighth horsepower to one horsepower split phase and capacitor types made in 1947 were built with inherent overheat protective devices. Field requirements make it desirable that a higher percentage of motors be equipped with inherent overheat protectors. To accomplish this, protector standards and standardized methods of applying protectors must be developed.