Arc Flash Protection in Layers

When ARC Flash protective garments are worn together in a layered combination, the PPE may give you a total protection value that is higher than the sum of the individual value for each garment. This is due to the air gap between each layer of fabric which acts as an insulator and increases the protection. This increased protection is useful to workers who need to gain additional protection where required for certain tasks.

ARC RATED CATEGORIES

Hazard Risk Category Required Minimum Arc Rating for PPE
ARC1 >= 4
ARC2 >= 8
ARC3 >= 25
ARC4 >= 40

Note – an appropriately arc rated Helmet, Visor and Gloves are also required.

Below are some examples of garments that have been tested together against a simulated Arc Flash exposure. These tests have been undertaken to give indications of typical protection values that can be achieved by wearing multiple layers.

PROGARM – LAYERING COMBINATIONS

6100 Arc Coverall + 5200 Polo Shirt = ARC 3, Class 2

Class 2 protection Torso only

progarm-coverall-arc3-class2

7480 Arc Coverall + 5285 Polo Shirt = ARC 3, Class 2

Class 2 protection Torso only

progarm-hv-arc3-class2

5850 Arc Jacket + 5200 Polo Shirt = ARC 3, Class 2

progarm-arc3-class2<

5200 Polo Shirt + 5630 Sweatshirt = ARC 3, Class 2, 31.0 cal/cm2

Class 2 protection Torso only

progarm-arc3-class2-31.0-calcm

ROOTS – LAYERING COMBINATIONS

RO27300 Polo Shirt + RO34160 Jacket and RO34260 Trousers = ARC 4, 47.1 cal/cm2

roots-arc4-47.1-calcm

RO25100, RO25120 Underwear + RO12085 Arc Flash Coverall = ARC 4, 51.9 cal/cm2

roots-arc4-51.9-calcm

RO25100, RO25120 Underwear + RO2517 Waterproof Bib and Parka = ARC 4, 48.9 cal/cm2

roots-arc4-48.9-calcm

RO25100, RO25120 Underwear + RO19190HV Jacket and RO19295HV Trousers + RO2517 Waterproof Bib and Parka = ARC 4, 61.2 cal/cm2

roots-arc4-61.2calcm