According to the “Maximum Power Method” in NFPA 70E, the estimated DC arc flash incident energy at the maximum power point can be calculated, and then the hazard boundary is defined as the following figure.
2. Personal Protective Equipment (PPE)
The PPE is determined by the incident energy which is the temperature produced (in cal/cm2) at a distance (usually eighteen inches) from an arc flash.
PPE requirements for EnerC+ battery container operational precautions is category 3.
Engineering that makes difference and excitement 