Fiber optic ran next to electric runs. Concerns? : r/electrical
As long as the fiber sheath is non conductive (small fiber is always going to be), the code permits it to be run in conduits and elsewhere along side of power wiring.
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I''m not going to pretend to know all the nuisances of the code but it appears it may be ok if the fiber optic cable is ran with the current carrying conductors when they are associated.