Wednesday: Arc Flash Boundaries
Know your lines and respect the boundaries before opening a panel.
Arc flashes can release temperatures hotter than the surface of the sun. Always read the arc flash label on an electrical panel before opening it. Stay outside the Limited Approach Boundary unless you are qualified, and ensure you are wearing the correct PPE before crossing the restricted approach and arc flash boundaries.
Post Conclusion
Failure Mode — Do Not Ignore This post describes a failure mode or active hazard. Do not ignore the warning signs described.