Grounding a self-grounded device when removed from a box

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When using MCAP cable as the grounding conductor(250.118) for a metal box w/ a self-grounding device NEC states a bonding jumper is not required between the grounding terminal of a grounding-type receptacle to a grounded box(250.146). The receptacle is grounded when bonded to the box. What about when the receptacle is not bonded to the box? When removed?
 
Are you asking about if the device is unscrewed completely from the box? In that case it should be de-energized, no?
 
I don't get the question. Why would you want a rule or code for something that is not installed or partially installed.
 
When using MCAP cable as the grounding conductor(250.118) for a metal box w/ a self-grounding device NEC states a bonding jumper is not required between the grounding terminal of a grounding-type receptacle to a grounded box(250.146). The receptacle is grounded when bonded to the box. What about when the receptacle is not bonded to the box? When removed?

I think this would be similar to, say, in surface work with an RS cover mounted recep. and an EMT system that is used as the EGC. If the cover is the newer style with the mounting screws for the recep. yoke you don't need a bonding jumper from the recep. to the box. Thus, one could remove the RS cover and the recep. would lose it's ground. I see this as the same issue with your installation and not a code violation.
 
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