Home Improvement Asked by Tobias J on June 8, 2021
I need to install a new grounding rod at my house and will be running the grounding conductor through an LB body and PVC conduit down to the ground.
But I also need to run a new coax cable into the house nearby, so I’m wondering whether I can drill a hole in the conduit body, install a feed-through bushing, and run the coax into the house through the same conduit? (I’d loop the coax and weather-seal it on the outside, of course).
If there is a cubic inch listing on the conduit body it may be possible.
You still have to meet the wire fill requirements the CGB or clamp, x multiplier for the largest wire size has to be added to the total count of wires cubic inch.
This is the same as modifying a listed J Box.
Your AHJ may not allow but if it has a stamped volume code has nothing stopping it.
If it is not stamped then it is not allowed to splice or modify. (Conduit body’s don’t have a approved size chart like boxes do).
Outside a cgb (cord grip bushing) that seals / clamps the wire would be required. Inside standard 2 screw clamps are ok.
Correct answer by Ed Beal on June 8, 2021
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