Terminal blocks - no fusing down?

Precisely, my thinking is that fusing down should protect lower gauge wire feeding other circuits.  In the same way when carrying out a PAT, you would typically replace a plug fuse attached to a figure 8 flex for 5A or 3A.

Keep in mind that almost all of the rest of the world manages perfectly well with unfused plugs - so there appliance leads are protected by faults only by the MCB or fuse back at the distribution board - typically 15A, 16A or 20A.  Once you understand that protecting conductors from fault currents is quite a different proposition from protecting the same conductor from overload, it all becomes a lot clearer.

    - Andy.

Precisely, my thinking is that fusing down should protect lower gauge wire feeding other circuits.  In the same way when carrying out a PAT, you would typically replace a plug fuse attached to a figure 8 flex for 5A or 3A.

Keep in mind that almost all of the rest of the world manages perfectly well with unfused plugs - so there appliance leads are protected by faults only by the MCB or fuse back at the distribution board - typically 15A, 16A or 20A.  Once you understand that protecting conductors from fault currents is quite a different proposition from protecting the same conductor from overload, it all becomes a lot clearer.

    - Andy.