That's what I would have expected, as a general rule.
However, as I have hinted, I imagine that one exception might have to be that of an 'unknown' (unknown source and destination) cable which is 'probably live' which has been found in a hole in a road. One presumably cannot safely dissect out the individual cores, so probably has no choice but to assume that it is live but nevertheless chop it 'in one hit' (whilst 'standing back'
) ... or is there some other possible approach in that situation? To 'de-power' an entire area would seem a bit excessive.
Kind Regards, John