Pull the outlet out of the wall. With all your stuff on standby clamp a amp meter around the hot. This will give you your load in amperes. amps x volts = watts or amps x 120(volts)= consumed power. Richards post will do the rest. Then turn it all on crank it up and see what you've got. I'll guess twice as much power consumed. You know I own an amp meter maybe I should run a test and report the findings.
