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#80503 - 04/23/02 12:22 PM Safety Switch -- "Dimple" in Lieu of "Hole"
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Can that dimple be drilled out to allow the use of a padlock, while in the "ON" position, especially in a supervised public location like a baseball stadium?

Does anyone know about any legal case that might cover this situation?

[This message has been edited by Joe Tedesco (edited 04-23-2002).]
Joe Tedesco, NEC Consultant

2014 / 2011 NEC & Related Books and Study Guides
#80504 - 04/23/02 02:49 PM Re: Safety Switch -- "Dimple" in Lieu of "Hole"
Bjarney Offline

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Where opening of a disconnect would create a hazard, I don’t think you could omit the lock. For example, if the switch served lighting indoors or outdoors, operating the switch at night could create a hazard. An open disconnect for a storm-water pump could create a flooding hazard, and may not be evident until an area becomes ‘submersed.’ There are a number of situations where preventing a switch from being operated (opened or closed) at the wrong time could be considered “practical safeguarding of persons and property.”

But then, I wonder if any switch manufacturer provides printed instructions on proper “use” of the dimple?

#80505 - 04/24/02 06:14 AM Re: Safety Switch -- "Dimple" in Lieu of "Hole"
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA


No Dimple

Which one is permitted?
Joe Tedesco, NEC Consultant


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