Do you have to install 25mm tails if upgrading a CU? Can the existing 16mm be used? The main fuse is 60A so surely 16mm is sufficient. Its just i am changing one tomorrow and are planning on using it for my NIC assessment and want it to be right in there their eyes
16mm² is fine for 60A, but are you positive that there is a 60A fuse in the carrier? Th label is not always correct so it's usually a good idea to fit 25mm² tails anyway.
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