Originally Posted by oh'mike
The box does not need to be grounded----when the outlet is installed the screw will ground the box.
I try to avoid answering electrical questions---while I have a good working knowledge I live in an area where Romex is not allowed and all wiring is done with conduit (meaning all boxes and conduit are grounded.)
I'll do the best I can. There are a bunch of licensed electricians here--- They must all be out enjoying the weather.---Mike---
The box is required to be grounded.
250.148 Continuity and Attachment of Equipment Grounding Conductors to Boxes. Where circuit conductors are spliced within a box, or terminated on equipment within or supported by a box, any equipment grounding conductor(s) associated with those circuit conductors shall be connected
within the box or to the box with devices suitable for the use in accordance with 250.148(A) through (E).
Exception: The equipment grounding conductor permitted in 250.146(D) shall not be required to be connected to the other equipment grounding conductors or to the box.
(A) Connections. Connections and splices shall be made in accordance with 110.14(B) except that insulation shall not be required.
(B) Grounding Continuity. The arrangement of grounding connections shall be such that the disconnection or the removal of a receptacle, luminaire, or other device fed from the box does not interfere with or interrupt the grounding continuity.
(C) Metal Boxes. A connection shall be made between the one or more equipment grounding conductors and a metal box by means of a grounding screw that shall be used for no other purpose, equipment listed for grounding, or a listed grounding device.