Close

IEEE 1584

Back to the Basics: What is a PPE Category (previously known as Hazard Risk Category or HRC)?

Q: Our customer is specifying “HRC 2”. What does this mean? A: Hazard Risk Categories (HRC) was a term coined by NFPA 70E-2000 to “group” levels of PPE with a goal of simplifying PPE programs for end users. The 2018 edition of NFPA 70E replaced the term “HRC” with “PPE Categories” since the risk assessment […]

Read More

What is IEC Box Arc Testing, and How Does it Compare to Open Air Arc Testing?

You may have heard of “box testing” or seen the standard designation for “IEC 61482-1-2”. What is this test, and how is it different from open-air arc testing and an ATPV or EBT arc rating? Box testing, as performed by IEC 61482-1-2, does not produce an arc rating. Instead, 2 different “arc protection” classes are […]

Read More