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Some time back electricians installed a whether proof box with what I thought was an external radial using a 2.5mm cable running from the consumer unit (supposedly to a 16A MCB). This was to allow me to connect a 2.5mm underground armoured cable to my garden room.
Unfortunately it doesn't look like the radial cable was ever connected to the consumer unit and is probably lost somewhere under the floor. I've therefore fitted a new whetherproof box at the back of an internal double socket on the main and extended the main through to the box, where its connected to the 2.5mm armoured cable. The garden room already has a 5A fuse switch for the lighting and ring main for the sockets, but because I was expecting the radial to be protected by a 16A MCB, there is no protection for the 2.5mm single armoured cable.
I therefore need to put a 16A fuse in somewhere. Is the easiest option to put a mini garage consumer unit in the garden room and re-wire the ring and lighting in to a 5A and 16A MCB, or is it better to protect it at the point the spur meets the ring?
There are too many sockets on the garden room to leave it to chance, though its highly unlikely I'd get anywhere near 20A.
thanks for advice
Unfortunately it doesn't look like the radial cable was ever connected to the consumer unit and is probably lost somewhere under the floor. I've therefore fitted a new whetherproof box at the back of an internal double socket on the main and extended the main through to the box, where its connected to the 2.5mm armoured cable. The garden room already has a 5A fuse switch for the lighting and ring main for the sockets, but because I was expecting the radial to be protected by a 16A MCB, there is no protection for the 2.5mm single armoured cable.
I therefore need to put a 16A fuse in somewhere. Is the easiest option to put a mini garage consumer unit in the garden room and re-wire the ring and lighting in to a 5A and 16A MCB, or is it better to protect it at the point the spur meets the ring?
There are too many sockets on the garden room to leave it to chance, though its highly unlikely I'd get anywhere near 20A.
thanks for advice