VR module for arc flash — boundary calculations, PPE category selection, energised work. NFPA 70E, IEEE 1584 aligned. VR module for arc flash — boundary calculations, PPE category selection, energised work. NFPA 70E, IEEE 1584 aligned. VR module for arc flash — boundary calculations, PPE category selection, energised work. NFPA 70E, IEEE 1584 aligned.