(3) A similar green-colored connection device, in the case of adapters. The grounding terminal of a

grounding adapter shall be a green-colored rigid ear, lug, or similar device. The equipment grounding connection shall be so designed that it cannot make contact with current-carrying parts of the receptacle, adapter, or attachment plug. The adapter shall be polarized.
(4) If the terminal for the equipment grounding conductor is not visible, the conductor entrance hole shall be marked with the word green or ground, the letters G or GR, a grounding symbol, or otherwise identified by a distinctive green color. If the terminal for the equipment grounding conductor is readily removable, the area adjacent to the terminal shall be similarly marked.
FPN: See FPN Figure 406.9(B)(4).

FPN Figure 406.9(B)(4) One Example of a Symbol Used to Identify the Termination Point for an Equipment Grounding Conductor.

(C) Grounding Terminal Use. A grounding terminal shall not be used for purposes other than grounding.

(D) Grounding-Pole Requirements. Grounding-type at- tachment plugs and mating cord connectors and receptacles shall be designed such that the equipment grounding connection is made before the current- carrying connections. Grounding-type devices shall be so designed that grounding poles of attachment plugs cannot be brought into contact with current-carrying parts of receptacles or cord connectors.

(E) Use. Grounding-type attachment plugs shall be used only with a cord having an equipment grounding conductor.
FPN: See 200.10(B) for identification of grounded conduc- tor terminals.

406.10 Connecting Receptacle Grounding Terminal to Box. The connection of the receptacle grounding terminal shall comply with 250.146.

406.11 Tamper-Resistant Receptacles in Dwelling Units. In all areas specified in 210.52, all 125-volt, 15- and 20-ampere receptacles shall be listed tamper- resistant receptacles.