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Life on the 6Amp Hook-up
Most modern caravans/motorhomes have two electrical systems, one for Mains Electricity 230V and one for the 12 volt side of things.
They are connected so that there is a Mains powered transformer which runs the 12v side and charges the Leisure Battery. This charger is 'on' all the time and you should assume it can take 0.5 - 1 Amp of the supply.
Other appliances which normally switch over to mains when you hook-up are fridges and water heaters for example so assume these are always on too. Given this possibility it is likely that you could instantly be drawing around 4 to 4½ Amps as soon as you connect your hook-up.
The Park supply is 6 Amps, so you need to calculate the total Amps your appliances can safely draw without tripping out the mains supply. If necessary switch one appliance off before turning another on.
To find out the amount of power (Amps) an appliance uses you need to know the wattage of the device.
As an example, typical average amounts are shown below.
 Mains Lights
 Charger/Power supply
 0.5 - 1.0
 Space Heater/Fire
 500 - 1000 - 2000
 2 - 4.5 - 9
 Water Heater
 Kettle (Low wattage)
 Air Con Unit
 1000 - 2000
 4.5 - 9
 Kettle (Std Household)
Of course, the above list is not exhaustive and you need to check the wattage of your own appliances.
(Usually shown on a small sticker somewhere on the appliance).
To find out the power required, add up the Amps each appliance you are using requires and keep the total below that of the supply (6 Amps) otherwise you will trip the supply.
As an example - a simple calculation is to first check the wattage of your appliance (e.g. 1000) then divide it by the supply voltage (230v) and the answer will give you the current the appliance is drawing.
So 1000 divided by 230 = 4.35 Amps. (Round this last figure up to Amps).