29 July 2011 5:43 pm BSTUpdated: 29 July 2011 6:31 pm BST
Photo by: BMW
/ Caption by: Liane Yvkoff
Conversation powered by Livefyre
How well do you know your surge protector?
Whether you're looking to add more outlets, or want to add a layer of protection between your gear and the outside world, here's what you need to know.