Have a sub panel/CU upstairs fed with 16mm - it has a it’s own main switch and everything is RCD protected.What are you trying to do?
The source board will already have a main switch.Have a sub panel/CU upstairs fed with 16mm - it has a it’s own main switch and everything is RCD protected.
At the moment it’s supply comes out of the main CU on a 32amp
MCB - does this need amending? Does it need another main switch at source?
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