I am thinking of buying a better inverter as mine is only a 300 watt. Seen this one that 2000watt http://www.watt-power.co.uk/catalogue/product_info.php?products_id=334 sand wondered if that would be enough for my RV? Could I leave it on fulltime (i.e, come on when power is taken?) as i would like to fit 2 x 240 sockets in the bus from it. Will this be big enough and is it a good price or inverer itself?