Explanatory notes
… may contain fixing devices (e.g., metal brackets, screws, bolts, clips, laces, slings, pins, cross pieces, caps, rods, … elements. The conductor cable or wire is fixed at the bottom of the assembly which is hung on a suitable support … walls, ceilings, floors, etc., by means of nails, screws, bolts, etc. Insulators with fixed supports may be built up …