In uk.d-i-y, Martin Angove wrote:

In a radial the current (except under certain fault conditions) will be
balanced, but in a ring, the slightest difference in impedance between
the two halves of the "live" ring and the two halves of the "neutral"
ring could quite easily lead to (miniscule levels of) unbalance.

Thanks (genuinely) for making it clear what you meant: yes, if your ring
has f'r example a well-made path to supply Live from both sides but a
looseish connection in one of the Neutral legs, you're right that there'll
be an imbalance in the currentses under such a fault condition. I thought
you were suggesting that in a normal condition, a ring would inherently
produce more of a field 'because there's a loop' than a radial would.

Cheers, Stefek