Report of the transmission committee: I — Data from operating plants on the effect of altitude on the operating temperature rise of electrical apparatus

RECOGNIZING the absence of conclusive data on the altitude correction to be applied to the temperature rise of electrical apparatus, and further the lack of uniformity of the general practise as well as the frequent entire omission of the correction, the Transmission Committee undertook the collection of data as to the opinion and practise of operating engineers and sent a list of questions to 150 companies and individuals.