Rajaram04, you have to understand how the ratings of a transformer work. For example, 1 A transformer doesn't limit the current it can produce to 1A. As the load current is increased, the secondary voltage drops and the heat losses in the core and windings increases. The rating a manufacturer quotes is based on a permittible temperature rise and the secondary voltage at a particular load current.
You say the secondary voltage is 14V, presumably this is measured by applying 250V across the primary and you connected your voltmeter directly across the secondary wires. To me, that suggests it is a 12V transformer and would produce 12V under rated load, in other words it is designed so it's output would drop 2V at it's
design current rating. You could connect a 12 Ohm resistor across the secondary and see if the voltage dropped to 12V, if it did, the transformer is probably rated at 1A.
Brian.