Don't Daisy Chain Power Strips, Surge Protectors or UPS's

Daisy-chaining (plugging one into another) power strips and surge protector strips is against most cities' fire codes. It is a fire hazard. So, you can get cited for it. An electrical system in a building is meant to handle a certain load of usage by the occupants. If you are daisy chaining you probably are adding too many electrical devices to one circuit. You'll know when your circuit breaker switches off.  Some folks who have electrical problems in their buildings use UPS (uninteruptible power supplies- basically, a battery for your computer) and apparently some have been known to daisy chain them.
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It's finanacially smarter to buy the UPS you need than two half the runtime.Ok, but supposing you had a big stockpile of UPSs that weren't been used anymore. Can you daisy-chain them? The answer is yes, you CAN but why would you want to. Here's three reasons why you shouldn't.

1. First, it's not UL recommended.
2. Second, you're not going to get 4 hours off 2 2-hour UPSs. Once the electric cuts, the UPSs sense that the electric is cut and you'll be using both UPSs at the same time.
3. Lastly, do you really want to listen to beeping for more than 2 hours? The beeping that a UPS does when the power cuts is meant to be annoying because a UPS is designed to keep your computer up long enough to shut it down properly. Then you are supposed to catch up on your reading until the power goes back up.

So basically, keep it simple and plan ahead for your electrical needs. Resist the temptation to daisy chain power strips, surge suppressors or UPS's.  Opt instead to power all your electrical needs properly.