What do IP ratings mean?

You can imagine how many times we get asked this question.

Basically the IP rating system was created to specify how resilient a light fitting is to ingress from dust, water and any other object (large or small). If you want lights fro your bathroom for instance, they need to be far more resilient to water than lighting in your living room.

Below is an easy to follow guide that will help you understand the values of the IP rating.