Reroute at least four of the conductors.
Reroute at least four of the conductors.
I like it. :grin:
Reroute at least four of the conductors.
Good idea.
We use a divider in the wireway when de-rate becomes a factor.
Where is there an allowance for that. I am assuming you mean the divider changes the derating.
376.22 Number of Conductors and Ampacity. The number
of conductors and their ampacity shall comply with
376.22(A) and (B).
(B) Adjustment Factors. The adjustment factors in
310.15(B)(2)(a) shall be applied only where the number of
current-carrying conductors, including neutral conductors
classified as current-carrying under the provisions of
310.15(B)(4), exceeds 30. Conductors for signaling circuits
or controller conductors between a motor and its starter and
used only for starting duty shall not be considered as
current-carrying conductors.
I still don't see where the divider allows you to have more than 30 conductors without derating. I think it makes sense but I don't see the wording.
"Only where" if you have a wireway with 40 conductors and you place a divider in the right spot you would not have any 'where' with more than 30 conductors. I see no ambiguity or gray area.
Thanks to all of you for your answers. Very interesting and clever...but looks odd for me to get 40% for 4 more conductors and 100% for 30!
Thanks to all of you for your answers. Very interesting and clever...but looks odd for me to get 40% for 4 more conductors and 100% for 30!
I am having a hard time seeing how this incomplete raceway divider thing gets you out of derating.
An incomplete divider does not seem to make 2 sections of raceway out of one.
Incomplete?
Who said it was incomplete?
If I have a 12" x 12" wireway and install a 12" x 12" blank end fitting in the middle it is about as a complete a divider as you can have.
Like making the 12x12 into two 12x6's?Okay. My bad. I was misreading what you said.
I had a brain fart and was envisioning something else entirely.
Like making the 12x12 into two 12x6's?
Incomplete?
Who said it was incomplete?
If I have a 12" x 12" wireway and install a 12" x 12" blank end fitting in the middle it is about as a complete a divider as you can have.