Electrical · E-9CKT2

Typical Grounding and Bonding Detail

Materials

Concrete Reinforced Concrete Steel Metal (misc.)

Elements

Foundations / Footings Entrances Connections / Plates Reinforcing

About this detail

Typical grounding and bonding connections for service entrance equipment, dry-type transformers, and panelboards per NEC 250 requirements. Phase bus, neutral bar, and ground bus arrangements within switchboards, along with equipment ground conductors sized according to overcurrent devices. A concrete encased electrode Ufer connection utilizes a bare copper wire connected to foundation rebar, while supplemental grounding includes copper-clad grounding rods and cold water pipe bonding. Ground bushings are required on all conduits terminating at panelboards and transformers, with continuous grounding conductors routed without splices.

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