I have just bought a house where I received the issued COC from the seller. There is a Sub DB in the garage that has three 20A plug breakers and one 15A light breaker. These feed a new extension to the house. However when checking the main board in the house i see that this Sub DB is only receiving its supply feed through a 20A breaker. My question then is how compliant is this with regulations, as in theory all looks good when looking at the sub boards handling capacity for all the new extra circuits, but in practice it is severely limited to only 20A supply from the main board.



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