This is the main fuse box for the 230V. There will be a master switch and and then separate fuses for each circuit. You have to consider how many circuits you want separated and then add on two extra spaces for the cut off switch.
- Fridge & Battery Charger
- Sockets
- Exterior Power
(The exterior power is basically for a pass through to get power in the awning.)
Something like this…
http://www.screwfix.com/p/wylex-5-way-fully-insulated-main-switch-consumer-unit/24223?kpid=24223&cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&gclid=CILFraeQhL0CFSfmwgodzFYAkg