I am concerned about opening a switch or receptacle box in a residence and finding a multiwire circuit,2 ungrounded(hot) and a shared neutral with the hot conductors measuring 240 volts between them.I believe this is allowed per the NEC to share the neutral and feed the circuits from both sides of the panel in order to reduce the neutral current thus allowing for only one neutral conductor.
This appears to me to be a saftey issue and maybe there should be a notice posted on the box stating that 240 volts is present.
What is the opinion of the group?
