How much gas do had with the caravan and in your awning:
How many LPG bottles must have in the caravan and awning?
You can have a maximum of two bottles of 11 kg in trolley. And it only one of them will be in use (in plant). In the awning must also have two bottles, one of which must be in use (in plant). That means, you must have maximum four bottles of 11 kilo, two of which are in the reserve. source Security Board