EE sell them a new service anyway....
They have fuses.... Let them recover from thier other problems first.
Wow! This one sounds wacky, are you getting over voltage everywhere, or just this circuit? If so its time for a new tranny from the POCO. Otherwise, high resitance, lost neutral and/or ground is my guess.
Amperage seems too high for this as well. While the dryer circuit is rated for 30A, it should not be pulling 30A!