No way of telling. to get amps you have to have a current flow, which you get when you connect a consumer to an outlet. Then the consumer will pull amps according to its wattage rating (Watts / Volts...
Power equals volts times amperes. So you have to look at your fuse, e.g. 30 amps and calculate: 120 volts times 30 amps equals 3600 watts.
Scroll down to related links and look at "Calculator"
None. Watts refers to how much electricity is being drawn from that 120v line. Think of volts as a size of pipe, watts as the size of a pitcher you are going to fill with water. If the faucet is off,...