https://www.comms-express.com/categories/iec-lock-leads/I tried P clips before and just laughed at my stupidity thinking staff would not drag devices by the mains leads. Find a solid steel P clip and they rip the back of the device out. The above link is a clever part and others do stock them. I remember a company showing them at the EBME conference last year, maybe John Sandham has their details?
