Ever wonder how electrical safety standards were developed? It’s study time! (Published Dec 2023)
Everyone,
Here’s the study on the effects of electric shock on humans by Charles F. Dalziel from 1961 which helped lead to the development of electrical grounding codes and GFCI protection.
Remember, this was during a time when most electrical devices such as radios, television sets and guitar amplifiers were not grounded at all, and it was customary to feel a shock when touching anything plugged into an electrical outlet. This study has contributed to grounding improvements in the National Electrical Code and saved countless lives. It’s a fascinating report about experimenting with electric shock levels on human volunteers. Ouch!
You can download a PDF of the entire 41 page study below and read pages 24 to 30 which show the actual test procedures. It’s a pretty deep read but fascinating.
Let’s play safe out there…. Mike
