Arc Flash & Electrical Safety News

Blog Author Steve Hudgik

Monday, July 22, 2013

Five Misconceptions about Electrical Safety

This 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:
  1. The Neutral Isn't Energized
  2. Overhead Service Drop Conductors Are Insulated
  3. That Untested, Unproven Circuit Breaker Will Trip Every Time 
  4. You Only Need to Read Chapter 1 in NFPA 70E
  5.  Low-Voltage Will Only Give You a Tingle, Nothing More
Read the article in Electrical Construction and Maintenance


Video Shows Extent of a "Small" Arc Flash

A 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.


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posted by Steve Hudgik | This Arc Flash Post and 1 Comments |

1 Comments:

At 4:54 AM, Anonymous Arc Flash Guy said...

It just goes to show the dangers of a small arc flash, highlighting the importance of PPE

 

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