I have an existing exterior conduit entering my house, carrying low voltage (CAT6, Coax) wires from our detached garage to my inside equipment room. I need to bring a new fiber-optic cable (for fiber internet) into the same equipment room in the same location where this conduit terminates. My goal here is to avoid having to drill additional holes in the side of the house to bring the cable inside, and see if I can somehow tap into the existing conduit body on the exterior.
Since the conduit contains existing wires, I can't just replace the conduit body with one that has an extra connector. Is there some type of conduit body extension that would bolt in between the existing body and the lid and provide for another ingress point into the conduit? If so, what is it called?
Inside the house, the conduit goes into a junction box, before continuing through flexible interior conduit to the final destination. Worse case, I could drill the wire through next to the conduit body and I still should be able to get it into the junction box to get into the interior conduit for the final segment.