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Wall connection to electrical box

1164 Views 5 Replies 5 Participants Last post by  Jim Port
I have an exterior masonry compartment for the hot water heater. The WH needs to be replaced so I disconnected water supply and electric.

I put a temp hose to connect the cold to the hot for now.

The electric coming out of the wall is a liquid tight tubing. I would prefer to mount a metal box at the wall, then from there to the new WH.

After I removed the liquid tight tubing, I noticed at the wall is a 1/2" rigid coupling sticking out by about an inch. I assume behind the coupling is a nipple through the 8" concrete block wall.

I tried to turn the coupling counterclockwise and it turns, but I am not sure this is a good idea, if the nipple inside turns with the coupling, then I might end up backing out more than just the coupling.

What is a good way to mount a metal box at the wall to that connection? If the coupling is flushed with the wall, I can open a knock out hole in the back of the box and use a chase nipple. But with the coupling stick out an inch, I am not sure how to make a good connection.
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Leave the coupling and screw a nipple into it.
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