Arc Flash & Electrical Safety News
Blog Author Steve Hudgik
Monday, July 22, 2013
Five Misconceptions about Electrical SafetyThis is not one of those articles that just provides a quick brush with five topics. The author, James White, writes about his actual experience and reminds me about when I was working in power plants in the 1970s. For example, he tells about cutting the neutral wire in a lighting system:
"I became a pretty good conductor. The muscle spasms hurled me through three panels of the drop ceiling, and I landed on top of a secretary’s desk. Stunned — either from receiving the shock or having the wind knocked out of me (I don’t remember). I was written up later — not for an unsafe act, but for impeding the secretary from performing her job. When the plant manager asked if I had learned anything, I told him, 'Yes, I need to get off the desk quicker.' He seemed satisfied with that answer."
The five misconceptions are:
- The Neutral Isn't Energized
- Overhead Service Drop Conductors Are Insulated
- That Untested, Unproven Circuit Breaker Will Trip Every Time
- You Only Need to Read Chapter 1 in NFPA 70E
- Low-Voltage Will Only Give You a Tingle, Nothing More
Video Shows Extent of a "Small" Arc FlashA new video on YouTube shows that even a small arc flash is a serious hazard. Watch this video to see what happens during an arc flash when the arc does not sustain in equipment with a 30 amp disconnect. The arc is less than one cycle and is 6/10 of a calorie.
posted by Steve Hudgik | This Arc Flash Post and 1 Comments |