UL White Book or other reference...

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Pierre C Belarge

Pierre C Belarge

Senior Member
Location
Westchester County, New York
The use of Reducing washers (sometimes called "doughnuts"). Where in either the NEC or the UL White Book can I find the info that says reducing washers are or are not suitable for grounding?
I know that I saw it somewhere, I just cannot remember where. Maybe the name I am using for reference is not the proper name.
Thanks!!
 
UL 514B is the testing standard and they're under QCRV in the White Book.


Paint must be removed on painted panels, which almost never happens in the field.
 
When "looking" in the white book do you guys use the old school hard copy or do you look at a virtual copy on your computer?
 
Pierre, below is the wording from the white book.

Outlet Bushings and Fittings


Guide Information


GROUNDING

Metal reducing washers are considered suitable for grounding for use in circuits over and under 250 V and where installed in accordance with ANSI/NFPA 70, "National Electrical Code."
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Roger
 
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good morning Roger.

I typed that up and sent it out last night...It is great to have so many sets of eyes, it makes us all better at what we do. :smile:

I mostly use the print copy, but soon i will be carrying my laptop with me, since I have so much reference material on the hard drive.
 
I really don't care what UL says, these devices do not make a solid contact and I would never trust them for a fault clearing path.
Don
 
don_resqcapt19 said:
I really don't care what UL says, these devices do not make a solid contact and I would never trust them for a fault clearing path.
Don
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Don, I absolutely agree with you.

Roger
 
don_resqcapt19 said:
I really don't care what UL says, these devices do not make a solid contact and I would never trust them for a fault clearing path.
Don
Click to expand...

From a personal stand point that is a decision you can make, I also agree.

If your out inspecting you can't fail them.

Of course you could likely get them for not cleaning the paint. :grin:
 
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