Chapter 8  image

Grounding/Earthing

“Technology: no place for wimps!”

Dilbert

It is often said that electricity always returns to its source. How it returns is a matter of considerable importance when it comes to safety. An improperly grounded/earthed system offers ample opportunity for personnel to get between the source and its return path. But a properly grounded/earthed system is designed to provide maximum protection for personnel and equipment.

In the 1970s, when amplified musical instruments and public address systems were relatively new, few people understood how to build safe power distribution systems. As a result, there were at least three ...

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