I think Fuse 4 is a filler being used as a connector block.
Old cutout arrangement was probably taller/bigger and fitted the conduit directly. New head fitted which was shorter and didn't reach the old tail or tail end damaged so used what was in the van to make up the difference.
Old cutout arrangement was probably taller/bigger and fitted the conduit directly. New head fitted which was shorter and didn't reach the old tail or tail end damaged so used what was in the van to make up the difference.