Sites usually have 16A blue outlets for caravans which is more than adequate to run the 3kw with approx 1kw to spare. Continental Schuko plugs are often 16A but sometimes 10A.
This may help…
http://www.campingandcaravanningclu...ower/electricity-for-campers-and-caravanners/
There would be ways to cut back the current drawn with a big dimmer switch or 'power controller'. I could make you a box of tricks to drop it back but would need to trial it to make sure the pump part of the heater worked ok.
This may help…
http://www.campingandcaravanningclu...ower/electricity-for-campers-and-caravanners/
There would be ways to cut back the current drawn with a big dimmer switch or 'power controller'. I could make you a box of tricks to drop it back but would need to trial it to make sure the pump part of the heater worked ok.