Had to make a board for base of cabinet to raise floor as only one leisure battery fitted as standard and no room for 2nd. Fuses are AGU electronic fuses, 50A each for the inverter. Black box in middle with thick wires is coupling point for inverter, B2B and batteries.

Aux fuse box: http://www.ebay.co.uk/itm/12-Way-Blade-Fuse-Box-Bus-Bar-With-Cover-Marine-Kit-Car-Boat-HGV-12V-24V-/191928889700?hash=item2cafda7164
Batts: Alpha Batteries