The potential impact of form spoofing, really, is that if you have a form that has drop-down boxes, radio buttons, checkboxes, or other limited input, those limits mean nothing if the form is spoofed.

Think about it: If you have a drop-down box or a radio button that limits the user to a certain amount of input, you may be tempted not to worry about validating the input.

The upper and lower limits of the rated power input or rated current shall be marked on the appliance so that the relation between input and voltage is clear.