JG- we are talking about removing a receptacle for repairs or replacment, not for inspection by the inspector. In any case, if you have a multiwire branch circuit consisting of 2 or 3 ungrounded conductors and one grounded conductor (neutral) you are using the neutral for a common return for 2 or 3 wires. When you interrupt the neutral, this applies usually 240v. to the receptacles down stream from that point where you interrupted the neutral. If you "pigtail" the neutral, this won't happen.
