I have a backbox to accept two FCUs (rather than putting in 2 singles). In the middle is a removable strip and a loose metal plate you can place under the removable strip to split the box in half. Do I actually need to do this? The plan it to join the two FCU supplies on the end of a radial cct. Would you only need to isolate the two halves if you have seperate circuits on each side?
cheers
Dave.