Running Cable for Water Heater
I’m running 10/2 NM cable from my main panel to a Rheem hybrid water heater. The cable will run through the attic and then out the wall above and behind the water heater. I find mixed opinion about whether or not the exposed cable has to be protected with conduit. What I can’t find out, after a few hours of looking, is what the cable passes through to exit the wall surface and enter the room. The Rheem instructions, 2012 IRC, and dozens of articles are silent on this. Is it just something like an escutcheon if NM cable is okay going from the wall to the water heater, or if conduit is required, is there something the conduit attaches to at the wall where the NM cable inside the wall first enters it? A couple of low-res photos show something looking like a junction box on the wall, but if the NM cable is continuous and just enters conduit as it enters the room, is a junction box needed (with no junction between wires)?
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