Electrical Exam Term

Isolated Ground Receptacle

A special receptacle with an insulated grounding terminal that provides a clean, dedicated ground path for sensitive electronic equipment.

Detailed Explanation

Identified by an orange triangle on the face, isolated ground receptacles are used in hospitals, data centers, and recording studios to reduce electrical noise (interference). Per NEC 406.2(D) and 250.146(D), the equipment grounding conductor for an isolated ground receptacle runs directly back to the panel without connecting to any intermediate junction boxes or conduit. This prevents noise from other circuits from contaminating the ground path.

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