POWER SUPPLIES (PSU) RUN BEST AT 50-70% LOAD--
Running a power supply at max load will wear it out prematurely. And, a cheap PSU at max load can fail with a fire hazard because they may be improperly rated. A 2000W cheap PSU on a 110V (USA) circuit would likely overload the 110V circuit and could possibly cause a house fire, not just an explodong PSU.
A cheap PSU will explode when run at max load. --scryptr
Thats what I wrote often before. NEVER buy cheap. You only have one life. Saving a few bucks with cheapest hardware is just stupid.
I second this. Most US household plugs are rated for 15 amps. That's 110V * 15A = 1650W. My extension cords get scary warm at already 1250W even without tripping the fuses... So please take care, measure your consumption if you don't know it, and stay safe.
A continuous load (e.g. a 24/7 mining rig) should generally be held to 80% of a circuits nominal rating. That 15a rating is for transient / short-term loads. For instance, I have a ‘20a’ PDU which is already derated to 16a to enforce this ‘rule’.
Also, not all extension cords are equal. You should look for high amp/power cords - ‘heavy duty’, prob 12g or 10g wiring, and no longer than necessary (typically used for large outdoor/construction equipment like saws.)