Yes, I agree here, 16mm will be fine (And I've seen 10mm for 40A loading or less as well)..I personally would use 16mm tails as some of these shower units are a job to get 25mm tails in. I always use 100 amp henley blocks as they are easier to use than the old 60 amp ones. What is the size of the main fuse and the existing tails.batty
I would concur with earlier posts re Henley blocks!Yes, I agree here, 16mm will be fine (And I've seen 10mm for 40A loading or less as well)..25mm tails in those small CU's is often impossible..
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Indeed!Perhaps a metal mini CU is best with large incoming cables.. ; \
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