Quick answer: All arc-rated (AR) clothing is flame-resistant (FR), but not all FR clothing is arc-rated. FR fabric resists catching fire and self-extinguishes. AR clothing has also passed an arc flash test and lists an arc rating in cal/cm². Electrical work under NFPA 70E needs AR. Flash fire work (oilfield, gas plants, refineries) calls for NFPA 2112.
| FR | AR | |
|---|---|---|
| Hazard | Flash fire | Arc flash |
| Standard | NFPA 2112 | ASTM F1506, worn to NFPA 70E |
| Label shows | NFPA 2112 certification | Arc rating in cal/cm² and often a CAT |
FAQ
Is FR clothing the same as arc flash clothing?
No. Arc flash clothing is FR clothing that passed an arc test (ASTM F1959) and carries an arc rating.
Can I wear NFPA 2112 clothing for electrical work?
Only if it also has an arc rating that meets your PPE category. Many FR shirts and jeans list both.
Which CAT do I need?
Your employer's hazard assessment sets it. CAT 2 (8 cal/cm² minimum) is the most common daily level. See our FR rating guide.
Where is the arc rating?
On the label, in cal/cm². No number means the garment is not arc-rated.
Gear
FR clothing, FR shirts, FR jeans and pants, lineman FR and company FR programs.