At 07:17 PM 12/21/98 -0700, you wrote: It probably has a 7Amp fuse inside, so the 7 Amps is just the max surge current. Even then most PC power supplies have less turn on surge current than a color TV because they have a negative temp coeff. surge resistor in series with the power input. Many TV's I've seen do not. Because of lower power disk drives, most PC's draw much less power than one may expect. Feel the air flow exiting from the PSU to get an indication of the heat load. Take out all the computer stuff from the case and put a light bulb inside as a comparison. One can also measure the currents on each of the DC leads (with an adapter because there are, for example, multiple 5 Volt leads). -Dave