In electrical safety, which statement differentiates dead-front from live-front panels?

• A. Dead-front panels are de-energized with all energy sources isolated; live-front work is performed under controlled conditions with PPE and procedures when energized components must be accessed.
• B. Live-front work is performed under controlled conditions with PPE and procedures when energized components must be accessed.
• C. Dead-front panels are de-energized with all energy sources isolated.
• D. Live-front panels are de-energized.

Answer: (B)

The key distinction is whether live electrical parts are exposed during the work. Dead-front means the panel is de-energized and energy sources are isolated, so workers aren’t exposed to live parts. Live-front means energized components may be accessed, and work must be done under controlled conditions with the proper PPE and procedures to manage arc flash and shock hazards.

That is why the statement describing live-front work as being performed under controlled conditions with PPE and procedures when energized components must be accessed best captures the difference from dead-front. In practice, de-energizing if possible is preferred; when it isn’t, work on energized parts requires strict controls and protective equipment.