Reprinted with permission from “IAEI News” by the International Association of Electrical Inspectors (IAEI). Copyright © 1929 to 2020 by the International Association of Electrical Inspectors. Current articles may be found online at https://www.iaeimagazine.org.
The March 1931 issue contains:
Polarity Identification of Systems and Circuits (Page 3) An extensive article about identifying conductors in 1931.
Why 110 Volts is Often Fatal (Page 9) Opinion about why 110 volts is fatal and according to the author is equivalent to 310 volts dc.
Editor’s Comments about Unemployment (Page 10) Interesting read from deep in the midst of the Great Depression.