UPS->good cable->wall is fine. UPS->splitter->wall isn't. edit: in theory, a 15-amp cable would be fine, since no single device in the US is allowed to pull more than 15A from the wall.

But, like its bargain Sjöss wall chargers (which come in 1-port 30W and 45W 2-port versions), these IKEA cables and multi-socket extension cable are certainly competitively priced – and a good ...