We're running power for medical equipment. The equipment comes with a service manual. In the service manual it mentions "D type grounding". Here is all the information as it is stated in the manual:

"Ground Terminal

Grounding resistance should be less than 100 ohms (D type grounding) ground terminal. Use a single ground to earth. Do not share with other electrical apparatus."


Never heard of "D type grounding". Based on the description it sounds like an "isolated ground" but since it's referring to the "ground terminal" I'm not certain. Anybody familiar with the term "D type grounding"?

Last edited by Potseal; 12/08/13 06:18 PM.

A malfunction at the junction
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Dwayne