I have a three cable circuit in the kitchen1, I know that one is live, one neutral and one is ground. However, there is no colour2 matching between the standard and the real cables, so I can't use the usual easy way, furthermore, from my brief research on the topic I've found that:
"...Typically Neutral is connected to earth ground at some point, usually at the breaker box. This pretty much makes earth and neutral very close in voltage. And Hot is always 220V (or the nominal line voltage) measured with reference to Neutral (and earth for that matter)..."
thus, a voltmeter would measure the same values between "hot" and neutral , and "hot" and ground.
How to figure out which is ground and which is neutral?
1. EU - Greece - 220V, 50Hz
2. Real cables colours: grey, brown, white.