could buy one of those Belkin Conserverse meters ( got a brand new one on craigslist for $4.00 but typically around $30.00 ) or kill-a-watt ones.
http://www.amazon.com/Belkin-Conserv.../dp/B003P2UMP8
You can then find the amperage I think from the watts if I remember my physics.
regs
msjboy