Electric Motor Control Basics - Book - Page 96
Understanding IP Ratings
Most Common IP Ratings
You’ll see any or all of these IP ratings depending on your specific trade. However, there
are a few that tend to appear more often than others. Let’s take a look at some labels
you’ll see on common enclosures.
This IP rates as “dust-tight” and protects against jets of water.
This IP rates as “dust-tight” and protects against submersion beyond one meter.
The ratings in the above list represent the most typical “waterproof” IP ratings.
Start your search here if you know your component will be around any kind of water
Other Ratings for Electrical Enclosures
While IP ratings are the go-to standard for electrical enclosures, they aren’t the only
ones. The National Electrical Manufacturers Association (NEMA) also has a protection
rating system in place.
You’ll most often see NEMA ratings on industrial equipment manufactured in North
As NEMA ratings map different protection characteristics than the IEC (such as
Part 1, Contactors
Basics: Part 2,
Basics: Part 3,
The Benefits of Type E/F
Basic Pump Control:
Three Phase DOL Starter
Control of an Electric Pump
Applying Motor Control
in a Wastewater
NEMA vs IEC Motor