The remote cable with three cords and a PC plug has got a length of at least 5m. It can be used to connect the reflectors of digital BAL ballasts. Therefore the three cords have cable ends (ferrules) of the size 1.5mm², wich makes them fit into every normal luster terminal.
Ferrules are used to shield the stripped ends of multi-wired cables so that they can be attached to n-terminals without harming the single wires. The inner diameter of the sleeve should be as small as possible, still big enough for shoving it without problems over the stripped wires. At last the sleeve will be squeezed with special crimping pliers.