Metal Box to Plastic receptacle?

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Old 06-24-14, 06:34 PM
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Metal Box to Plastic receptacle?

Hey all. Need a bit of advice.

I have a home built in 1927 that is a mix of Knob and tube and romex. I'd like to do a new run of conduit from the panel in the garage up to the front room.

Over the years, a few people got lazy and just put in floor receptacle directly through the floor.

I'd like to put a receptacle in the wall and curious what the best way to do this is since there is no craw space access. My thought was to terminate the run with a metal box as close as I can get to the outlet, then have romex out of the box through the floor and into the wall which would feed into a plastic receptacle.

I know that you should never use MC or BX with plastic, but does this setup sound safe?

I've never had a setup where the there is no subfloor and the wood floor is visible from the garage, so sorry if this question is naive.

Quick sketch if none of that makes sense:

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Last edited by seaneee; 06-24-14 at 08:17 PM.
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Old 06-24-14, 06:57 PM
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Over the years, a few people got lazy and just put in floor receptacle directly through the sub floor.
I've never had a setup where the there is no subfloor and the wood floor is visible from the garage
Subfloor or no subfloor, which is it? Is conduit required in your city?
 
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Old 06-24-14, 08:13 PM
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Based on the diagram your plan looks OK if the circuit is grounded. The knob and tube should not be extended.
 
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Old 06-24-14, 08:17 PM
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Sorry, no subfloor.

Just the joists and wood flooring laid across the top.

As for the requirements, I have looked, but can't seem to find anything. I know that the last three places I've lived have all had conduit in the garage. I don't think I've seen exposed romex other than inside the walls.
 
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Old 06-24-14, 08:21 PM
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Thank you. To be honest, I don't even want to go near the knob and tube. The outlets that use it are for lamps, etc.
 
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Old 06-25-14, 05:42 AM
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It would be easier if you could substitute NM-B cable (aka romex) for the conduit. Try checking with your local building authority to see if they require conduit, but I doubt they do.
 
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