I don't understand how that affects what I said - can you explain?What if the Ze was <0.04 ohm?If Zs is low enough to satisfy disconnection times, then that it surely 'it' as far as that consideration is concerned, and I'm almost certain that no-one could find any regulation which said otherwise.
I presume that if one appears to have a very low Ze, one needs to think about where the supply is coming from (distance to transformer) and, if necessary, question the accuracy of one's measurement - after all, with a TN supply in 25mm², 0.04Ω would only allow for about 23m to the transformer
Kind Regards, John.
