The Schuller 16 Way Wiring Centre is suitable for most popular heating/hot water systems. It provides a safe and tidy approach to wiring with fixed and movable cable links, terminal numbers and cable identification labels to ease wiring. The box is designed to be fixed to a flat dry (indoor) wall. There are cable entry points top, bottom and rear of the box. The following wiring connection information covers most popular domestic heating and hot water systems.