CRTGAMER wrote:Chance of motor overheat if the source does not carry enough amperage
I have seen welders and compressors burn up due to low rated extension cords, the same cord can still run a drill just fine. With too much resistance the Alternating Current spikes and surges is not a good thing. The PS3 doesn't draw near as much juice but still a power hog with internal electric motors that needs an adequate supply. A 15 amp cord plugged into a 15 amp power strip which in turn is plugged into a 15 amp wall socket is not a guaranteed the full 15 amp availability.
Again, we are talking about a PS3. While it draws a lot of power compared to some consoles, we aren't talking about a welder or compressor (as you acknowledge). In this case, the same principle does NOT apply for the reasons jeffro stated.
All the stuff
irixith brought up a good point of other devices plugged in such as the HD that also draw power. You have to also have to consider ALL the devices that are plugged in a given circuit. The overhead light in the other bedroom for instance could also be pulling from the same circuit. All reducing available watts to the console, so why risk adding resistance thru a cheap extension cord or power strip?
What "risk" is there? Certainly no risk of a YLOD, as you first suggested.
There are two ratings to go by
Continuous watt draw and the more important SURGE amp rating from powering on a device. Usually double of the Watts/Amps printed on the sticker.
How does this get us any closer to understanding how a power bar puts your PS3 at risk. It doesn't take a dedicated circuit directly into your fuse box to be as safe as possible.