Hi CFT, good to see you're still working here and being helpful and careful you can read the website where it states that it is safe for humans... if you touch the live wire you may get a nasty shock but not enough to cause serious harm or kill you. Voltage is high but it is high Ampage one has to be careful about with electricity. I certainly will be having it on while on the bed, I just won't be sleeping with it on until I have checked any fire risk, which I think is probably not too much to worry about anyway. I'm gonna ask the maker of it about what I plan to do (physics expert) and his expert opinion on any potential fire risk, right now.