Reactance of square tubular bus bars

SQUARE tubular bus bars are coming into use to an increasing extent, as they are economical and convenient for joining to insulators and to branch circuits. The reactance of bus-bar circuits is frequently of importance, in order to compute the voltage drop under normal conditions and the current under short-circuit conditions. The purpose of this paper is to present formulas and curves by which the reactance of square tubular bus bars may be determined.