Well if you reckon that three or four outlets running at the same time is more risky than two outlets running at the same time I can see some logic in that thought.Then that is a daft reason.
I am not suggesting that it always happen or even mostly happens but I can envisage it happening sometimes and therefore the simple step of reducing that risk by changing the rules a bit I suppose might help.
I have not seen suggested another alternative reason for the rule change.
Changing 100 sq yards to 100 sq metres for area served by a ring final circuit changed the floor area served by about 20% but nobody bothered too much so our 100 sq yards was not that near the bone in the first place?
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