Another thought: For our 10' tap rule, we are not required to fuse it in any way, we are only asked to size our tap conductors to minimum 1/10 the size of the overcurrent device on the feeder and to be adaquate size for the load and have the ampacity of the device they terminate at. If this device is a MLO panel, or a safety switch, makes no difference. If it is a CB or a MLO makes no difference. Not required to terminate in a single set of fuses or a CB. When we move to the 25' rule we must terminate in a CB or single set of fuses.
