INGRESS PROTECTION: Chris Lloyd explains how different IP ratings can be reached and how to maximise your enclosure's integrity

摘要

One of the most critical factors in deciding which electrical enclosure or junction box should be used to protect, your electrical systems and their connections is its IP rating. No matter where the housing will be located, you need to be sure that it will be able to withstand any hostilities its environment may throw at it. But how many people actually know how these IP ratings are achieved and, most importantly, the ways in which they can be compromised during installation?