I am in the US. I have a whole house surge protector but that doesn't protect you from surges on the same circuit. So I use a combination of a whole house surge protector, PDUs, and 240v capable surge protectors per mining rig. Having the ability to plug multiple devices into the single power strip / surge protector comes in handy. For example all of my rigs have multiple PSUs plus a fan. I can control all three devices by plugging them into the power strip / surge protector. Here is how I have it setup.