The GFI just isn't a magical bullet that will help save you from damage – but it can help save your ass in some situations. (So I have two mounted at my workbench anyhow…) Together with supplying backup power, many UPS units also help shield connected equipment from power surges https://travistenxh.p2blogs.com/29802854/the-smart-trick-of-power-supplies-refurbishment-that-nobody-is-discussing