Wire size allowed in lb's

[don_resqcapt19]

If you look close part of the LB is on the conduit, it may have rounded edges to comply.

Tim,
In the top left picture on the linked page, the conduit is not connected to the LB and the wire is being installed. That is a code violation.

 

[don_resqcapt19]

So why aren't 2" LB's 30 inches long?

Chris,
6x2 does not equal 30. We need 12" between the conduits and would would require the fitting about 17" long. If it is not then it must be marked with the maximum size and number of conductors or used only with conductors that are smaller than #4.

314.28(A)(3) Smaller Dimensions. Boxes or conduit bodies of dimensions less than those required in 314.28(A)(1) and (A)(2) shall be permitted for installations of combinations of conductors that are less than the maximum conduit or tubing fill (of conduits or tubing being used) permitted by Table 1 of Chapter 9, provided the box or conduit body has been listed for, and is permanently marked with, the maximum number and maximum size of conductors permitted.

 

[LarryFine]

The fact that this is a listed product does not change the fact that the use of this product as shown on the website is a code violation.

So how did they get a listing?

If you follow the manufacturer's instructions, you're in violation, and if you don't follow them, you're in violation.

Yikes! :-?

 

[don_resqcapt19]

Larry,
I don't expect that UL looked at the information on the website and I do not accept that those instructions are "listing and labeling instructions". There are just manufacturers recommendations and are not covered by 110.3(B).
As far as the listing the product can be used in a code complaint manner, so there is no reason not to have a listing. Even the removal of the complete front half of the LB to pull in the conductors would be code complaint. It just is not compliant to have the conduit detached from the LB when you are installing the conductors.

 

[LarryFine]

It just is not compliant to have the conduit detached from the LB when you are installing the conductors.

Who would know? :roll:

Seriously, how much movement would it take to go from compliant to non-compliant? 1/32"? 1/8"? 1"?

 

[chris kennedy]

Chris,
6x2 does not equal 30.

Don,
I don't use the 'new math' or the metric system.

Sorry, carry on with the discussion.

 

[don_resqcapt19]

Who would know? :roll:

Seriously, how much movement would it take to go from compliant to non-compliant? 1/32"? 1/8"? 1"?

Larry,
The website pictures show the conduit 3 or 4 diameters away from the fitting. As far as knowing...you don't unless you see it happen...just like a lot of things for inspectors.

 

[LarryFine]

If I were to "get caught" using one of these as described, I would hope an inspector who believes in the intent of the codes, rather than the letter of the codes, would agree that less conductor damage is likely to occur.

Of course, I've never even seen one of them yet, so it's not an immediate concern. One other thing: are we to always expect the conduit entering the split end to be flexible enough to permit that much movement?

 

[sparky59]

i'm ordering some ASAP.