My question is;
If you are running a "jumper" from 1 string to another & the distance is about 10'-14' and it happens to be inside of EMT (only 1 conductor) would this cause an induction situation ?
Thank you.
My question is;
If you are running a "jumper" from 1 string to another & the distance is about 10'-14' and it happens to be inside of EMT (only 1 conductor) would this cause an induction situation ?
Thank you.
There will be no inductive heating, since that only occurs as the result of a changing magnetic field from AC current flowing through the wire. And only if the EMT or IMT or rigid is ferromagnetic (i.e. steel, not aluminum).
The NEC allows you to put conductors in a "sleeve" which does not have to meet various requirements for raceways. But if the length of EMT is fastened to a box or similar at each end, then it becomes a raceway, whatever your intentions may be, and the full restrictions of Chapter 3 wiring methods in a raceway come into play.
The other main place that a sleeve becomes an induction issue is when the conductor it contains is a GEC. In that case the conductor must be bonded to the sleeve at both ends to avoid the sleeve forming an RF choke that hinders passage of lighting related currents.
