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Safety Switch -- "Dimple" in Lieu of "Hole" #80503
04/23/02 02:22 PM
04/23/02 02:22 PM
Joe Tedesco  Offline OP
Member
Joined: Oct 2000
Posts: 2,749
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
2017 / 2014 NEC & Related Books and Study Guides
Re: Safety Switch -- "Dimple" in Lieu of "Hole" #80504
04/23/02 04:49 PM
04/23/02 04:49 PM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
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?

Re: Safety Switch -- "Dimple" in Lieu of "Hole" #80505
04/24/02 08:14 AM
04/24/02 08:14 AM
Joe Tedesco  Offline OP
Member
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
[Linked Image]
DIMPLE

[Linked Image]
No Dimple

Which one is permitted?


Joe Tedesco, NEC Consultant

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