EVs and the DC Hazard: 88/12 CAT 2 Coverall in a DC Arc

With the rapid growth of electric vehicles (EVs), and the infrastructure needed to support them, so too grows the importance of understanding the direct current (DC) arc hazard. That’s where Tyndale comes in! This series lays out the differences between the alternating current (AC) arc hazard and its lesser-known DC counterpart and demonstrates – through first-of-its-kind real-world video footage – the power of DC arcs. Follow along to learn more and witness firsthand the life-saving difference the right arc-rated (AR) clothing makes in the face of a DC arc.

Today we’re switching it up: instead of testing shirts and pants against DC arcs, we test the significance of DC arcs against AR 88/12 CAT 2 coveralls. Coveralls made from an 88/12 fabric blend – that is, a fabric that’s 88% AR/FR cotton and 12% nylon – are commonly used in the industry. This fabric blend offers a balance between comfort and durability while providing arc flash protection. Join host Scott Margolin, Vice President of Technical, as we put these coveralls to the test:

Did the Coveralls Provide Reliable Protection?

The AR 88/12 coveralls possess inherent flame resistance and are designed to provide reliable protection against arc flash hazards which we saw firsthand in the video above. Through careful observation, it becomes evident that the AR coverall has unequivocally fulfilled its intended purpose. Notably, there is a complete absence of afterflame, breakopen, or any signs of compromised integrity. The garment chars instead of burning and it insulates the wearer from the hazard. There would be no body burn to the wearer though this garment at all.

This video shows why it’s so important to wear AR clothing and appropriate PPE when there is an arc hazard in your job environment. In fact, in most of the injuries and fatalities we see, the outcomes were preventable – caused by people wearing fuel. This video shows that the DC arc hazard is no exception. Don’t leave home without your last line of defense.

Next up, we find out what happens in a DC arc when the potential incident energy level is high enough to require an arc suit instead of dailywear. How does it perform in this real-world test? Plug in to find out.


Series: EVs and the DC Hazard

Think you know arc flash? Think again. DC arcs are different. Following along with this series to see how different – and how to stay safe.

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