2 × 4 × 12 TE board for a detached house

This configuration is a whole house: basement, ground floor and upper floor with 19 rooms, a garage, a terrace and the entrance. The room plan has every socket, switch and light outlet, all within the installation zones of DIN 18015-3. In the bathroom, socket and mirror light stay outside the zones of DIN VDE 0100-701.

The board hangs in the basement hall, directly below the ground-floor hall. From there the cables rise straight into the hall and the landing above, and the slot plan routes each of the 30 circuits through the zones to its outlets. The cross-sections follow from those lengths: the voltage drop to the farthest outlet stays below 3 % (DIN 18015-1).

Every circuit has 30 mA residual current protection, from four RCDs and ten devices with a built-in RCD. Fridge, freezer, heating and network cabinet each get their own RCBO, so a fault elsewhere does not switch them off. Living room, study, bedroom, both children’s rooms and the upper-floor lighting run through arc fault detection devices (AFDD). Washing machine, dryer, dishwasher and microwave sit behind a type F RCD, and the EV charger has its own type B RCD (DIN VDE 0100-722).

Lighting is split by floor over three circuits on different RCDs and phases, so a trip never leaves the whole house dark. The board is fully wired: main switch, type 2 surge protection, main branch terminals, comb busbars and a separate neutral terminal for each RCD. L1 carries 10 circuits, L2 and L3 9 each, plus the cooktop and the charger on all three. 11 TE stay free as reserve, closed with blank covers.

Open the house in the room planner for the floors, wall views, 3D and the PDF for your electrician, or the board in the panel planner for labels and the test report.