Lappkabel h07z k single core wiring cable lappkabel 4726004 this harmonised halogen free hook up wire from lappkabel is recommended for use in switchgear cabinets and distribution boxes and in tubes in or under plaster it is available in a range of colours and in a choice of sizes lappkabel 4726004 h07z k single core wiring cable greenyellow sheath 6mm