Corner Ground Delta

[don_resqcapt19]

Lost neutral when you have line to neutral loads and the variance of voltage to the connected 120 volt loads is different situation than losing the ground reference itself though. Remove bonding jumper and you still have 120/240. Voltage measured to earth may vary as loading conditions vary though, and capacitance is a factor in what voltage readings you will see to ground. Grounding the system gives your measured voltages to earth more stability as the system has a fixed reference.

Yes the reference to earth does not really do anything other than give us the voltages to ground that we expect. All of the various systems that we ground, will still have the same voltages between the actual circuit conductors, with or without a connection to earth.