Abstract
IN a recent paper entitled "The Measurement of Lightning Voltages and Currents in Nigeria, Part 2, 1938-1939", read in London before the Institution of Electrical Engineers, F. R. Perry, G. H. Webster and P. W. Baguley record the details of an investigation on the magnitude of lightning voltages and currents on Nigerian high-tension transmission lines, and continue an earlier work commenced by one of the authors. Three-phase oscillographic and klydonographic records of voltages were obtained, together with magnetic link measurements of currents on pole and lattice-mast structures. In addition, continuous records have been obtained of the interchange of current between earth and atmosphere during weather disturbances. The investigation resulted in a large amount of data for statistical analysis, and the results derived are briefly summarized below.
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