True I just got off work and I wasn’t reading properly, I seemed to confound 1.0 cal/cm2 with amps in my excitement, and forgetting it is also RMS and not stated here.
Hey it’s OK to not know what you’re looking at…480v is the RMS voltage, but it really doesn’t have much to do with this.
This is an arc flash label. It tells you how big a boom a piece of electrical equipment can make.
It is based on many factors, not just voltage, power, and amperages. It factors in equipment sizes and gaps, locations in the system, etc. to generate a model of how much boom it can go.
Where did the 26 amps come from?
The amount of ouch is on the label: 391 cal/cm2
True I just got off work and I wasn’t reading properly, I seemed to confound 1.0 cal/cm2 with amps in my excitement, and forgetting it is also RMS and not stated here.
Hey it’s OK to not know what you’re looking at…480v is the RMS voltage, but it really doesn’t have much to do with this.
This is an arc flash label. It tells you how big a boom a piece of electrical equipment can make.
It is based on many factors, not just voltage, power, and amperages. It factors in equipment sizes and gaps, locations in the system, etc. to generate a model of how much boom it can go.
https://e-hazard.com/how-arc-flash-energy-is-calculated/