Is NEMA the same as IP?

The NEMA and IP rating systems are two different standards used to classify the protection levels of electrical enclosures and equipment. While both provide information about the level of protection against environmental factors, they have distinct differences. This article aims to shed light on the similarities and differences between the NEMA and IP rating systems.

NEMA Ratings

The National Electrical Manufacturers Association (NEMA) developed a set of standards that define the types of environments in which electrical enclosures can be used. The NEMA ratings range from 1 to 13, with each number indicating a specific protection level against different hazards such as water, dust, corrosion, and impact resistance.

IP Ratings

The International Protection (IP) rating system, also known as the Ingress Protection rating system, is an international standard developed by the International Electrotechnical Commission (IEC). The IP ratings consist of two digits; the first digit indicates the level of protection against solid objects like dust, while the second digit represents the level of protection against liquids such as water.

Comparing NEMA and IP

While both NEMA and IP ratings provide information about the protection levels of electrical enclosures, there are notable differences between the two systems. One key difference is that NEMA ratings cover a broader range of environmental conditions, including factors like corrosion resistance and impact resistance, which are not addressed in IP ratings.

Another difference lies in the certification process. NEMA ratings are based on self-certification, where manufacturers claim compliance to a specific NEMA standard. On the other hand, IP ratings require third-party testing and certification to ensure the stated level of protection.

In summary, while NEMA and IP ratings serve the same purpose of defining protection levels, they have different approaches and coverage. NEMA ratings cover a broader range of environmental conditions, including factors like corrosion and impact resistance, while IP ratings focus primarily on protection against solids and liquids. Understanding the differences between NEMA and IP ratings is crucial in selecting the appropriate electrical enclosure for specific applications.