kbsparky
Senior Member
- Location
- Delmarva, USA
Would they allow it using one of the Arlingtons with the removable sides?
Drilling of LBs
- Thread starter Alutiiq Eng
- Start date
- Status
- Location
- Massachusetts
Why?
What is the safety issue?
If there is no safety issue it should be allowed, funky looking or different than what we are used to should not be justification for an inspector to not approve something.
swptln
Member
- Location
- East Brookfield, MA
I agree, that LB is not intended for that use.
shortcircuit2
Senior Member
- Location
- South of Bawstin
The installation would be in violation of 314.28(A)(2) for the required distance of 6 times the trade size (3/4") and the opposite wall of the conduit body.
read the first part of 314.28 (A) in regard to conductor size
shortcircuit2
Senior Member
- Location
- South of Bawstin
Thanx...I missed the #4 or larger wire part.
- Location
- Massachusetts
Why does that matter?
weressl
Esteemed Member
Wouldn't using or applying an item for purposes other than it is approved for; be a violation of the listing itself? Example; using a ciruit breaker as a regular ON/OFF switch when it is not listed as such?
Would you mount terminal strips in an XJB, by drilling and tapping the wall?
- Location
- Massachusetts
As I pointed out.
ULs postion is it is up to the AHJ to determine if the modifications and use of the product are such that UL needs to do a field evaluation or the AHJ can certainly say no.
But in my personal opinon unless there is a safety issue I see no reason not to approve it.
I very rarely see specific labeling or instructions with enclosures or cabinets that say we may drill them at will yet we do that all the time with the blessing of the AHJ.
To reiterate my position, the AHJ certainly has the right to say no to this, but they are not required too, nor IMO should they.
weressl
Esteemed Member
It was somewhat of a trick question, but it illustrates that how easily important aspects of the listing is 'missed'.
An XJB refers to an Explosionproof junction box, and drilling and tapping the wall certainly would void the listing, as it weakens the wall of the box that is designed and tested to withstand an internal explosion, and no sane AHJ would override that.:roll::lol:
....its really not a trick question, a hack would drill out the side of an LB the same as a hack would drill and tap a XJB
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
I think the dancing on the head of a pin that goes on over listing and manufacturer's instructions is often counterproductive.
There is no way that a manufacturer should limit the way their products can be safely modified in any practical way for a lot of items. A lot of people drill holes in boxes, conduits, LBs, etc., to let water drain out of conduit systems. Very common. Does the instruction sheet say you can do that? No. And it shouldn't. Does the instructions that come with conduit say it can be cut to length? How about painted? Or bent?
IIRC, the instructions for XP boxes have pretty explicit instructions about what can and cannot be done to them.
Just curious - why did LBs get delisted?
There is no way that a manufacturer should limit the way their products can be safely modified in any practical way for a lot of items. A lot of people drill holes in boxes, conduits, LBs, etc., to let water drain out of conduit systems. Very common. Does the instruction sheet say you can do that? No. And it shouldn't. Does the instructions that come with conduit say it can be cut to length? How about painted? Or bent?
IIRC, the instructions for XP boxes have pretty explicit instructions about what can and cannot be done to them.
Just curious - why did LBs get delisted?
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