Quote:
Originally Posted by Bibio
people not being able to grasp the concept that there is no ''Ground'' in a DC circuit. its either Positive or Negative... this includes vehicle wiring.
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Because a lot of the circuits use the metal frame / bodywork as a return path it is convenient to refer to it as common or ground, and everyone knows what it means.... Nobody making you use the term it it offends you that much. I have been involved in industrial electronic all my working life and loads of people refer to ground. Americans use the term very freely
https://mechanics.stackexchange.com/...egative-ground
Some DC systems have both say a +24v rail and -24v rail, with a common or 0 volt rail, referred to as ground ( often grounded to a metal chassis in the system ). Grounding one leg of the DC also means the circuit is more resistant to interference.