AVS Special Member
Join Date: Sep 2007
Location: Give a monkey a brain...
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The ridges inside the flex conduit reduce the contact area with the cables, making the cables easier to pull.
Some rigid conduit has ridging on the inside, for the same reason.
That another benefit of the flex, compared with the gray rigid NMT/PVC.
Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense. -Buddha
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