GRD has various meanings in the Army & Military category. Discover the full forms, definitions, and usage contexts of GRD in Army & Military.
The electric neutral line having the same potential as the surrounding earth; the negative side of a direct current power system; the reference point for an electrical system. 1. An electrical term meaning to connect to the earth. 2. A conducting connection, whether intentional or accidental by which an electric circuit, or equipment, is connected to the earth or some conducting body that serves in place of the earth.
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