Sizing Wireways (conduit bodies)

[Strathead]

When a conductor enters the end of a wireway and exits the side similar to and LR or LL conduit body, does 312.6A apply? If not, then what does? I am reading 314.28 (A)(2) and it seems that that installation is not legal. The width of the wireway must be 6 times the diameter of the conduit. And I would guess that an LL or LR is acceptable only because it has a listing is this correct? The only time the 312.6A can be used is when you are entering opposite the cover.

"(2) Angle or U Pulls, or Splices. Where splices or where angle
or U pulls are made, the distance between each raceway entry
inside the box or conduit body and the opposite wall of the
box or conduit body shall not be less than six times the metric
designator (trade size) of the largest raceway in a row. This
distance shall be increased for additional entries by the amount
of the sum of the diameters of all other raceway entries in the
same row on the same wall of the box. Each row shall be calcu‐
lated individually, and the single row that provides the maxi‐
mum distance shall be used.
Exception: Where a raceway or cable entry is in the wall of a box or
conduit body opposite a removable cover, the distance from that wall to
the cover shall be permitted to comply with the distance required for one
wire per terminal in Table 312.6(A).
The distance between raceway entries enclosing the same
conductor shall not be less than six times the metric designator
(trade size) of the larger raceway."

 

[Strathead]

I am surprised no one has responded yet. Is the question unclear?

 

[don_resqcapt19]

The rules in 314.28 apply to conduit bodies. Most conduit bodies are marked with the maximum number and size of conductors that are permitted to be installed in that conduit body. 341.28(A)(3) provides a method for doing a calculation where you want to use a different quantity or size of conductor in the conduit body.

In general, a standard conduit body is not suitable for larger conductors and is almost never suitable for the same size and number of conductors that the raceway is suitable for.

 

[electrofelon]

Do the 314 rules apply to wireways? What does 376 say? (I'm not in front of a codebook)

 

[don_resqcapt19]

Do the 314 rules apply to wireways? What does 376 say? (I'm not in front of a codebook)

If you are asking about using a wireway in place of a conduit body, then yes, then some of rules in 314.28 apply.

376.23 (B) Metal Wireways Used as Pull Boxes.
Where insulated conductors 4 AWG or larger are pulled through a wireway, the distance between raceway and cable entries enclosing the same conductor shall not be less than that required by 314.28(A)(1) for straight pulls and 314.28(A)(2) for angle pulls. When transposing cable size into raceway size, the minimum metric designator (trade size) raceway required for the number and size of conductors in the cable shall be used.

 

[Strathead]

If you are asking about using a wireway in place of a conduit body, then yes, then some of rules in 314.28 apply.

That is what I am asking. Coming in the end and out the side (not opposite the cover) would require the incoming end to be 6 times the diameter. Can't say how many times I have seen this done, but it makes sense. When you enter a side and exit the back. the wires go in and the deflection per 312.6 is merely the fit in the box, but when you pull in an end and out a side, you have to pull in to a conduit that is "x" distance from the opposite wall.