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How to cut into hardwood floor for round elctrical outlet

stephenjnielsen's picture

Electrical code requires placing a floor outlet within our nice oak hardwood floor. The outlet box provided by our elctrician is cast iron, round, just shy of 4 inches in diamenter. The brass cover is exactly the same diameter as the round box, leaving no room for a sloppy cut hole. The wire for the box is in the center of the area where the hole goes, so a hole saw will not work. What is the solution?

Stephen  

stephen (post #207504, reply #1 of 5)

I've done a few of these installs and it seems you might have the wrong box, or the wrong cover for the box.

Look at Hubbell ( http://ecatalog.hubbell-wiring.com/productinformation/viewcatalog.aspx?Dest=hubbell-wiring.com/press/catalog/L.pdf&Page=8 )

Page L-20.

Otherwise, contact Hubbell and ask them (or a good electrical supply house). There is probably a flange available that's bigger than your "cover" that would surround the cutout a bit more. Mount it first, then the cover to the flange.

We've always used a rectangular box for these applications.

Wonder if they supplied you with a box for a poured concrete situation. There are flanges for those that trim the opening.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Yeah, get a different box.  (post #207504, reply #2 of 5)

Yeah, get a different box.  Plus, you can probably use a hole saw for most of the cut.  Just set the pilot really shallow, then remove it entirely once you've gotten a good groove started.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

Stephen (post #207504, reply #3 of 5)

you find what you're looking for yet?

Hubbell is a good site.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


If you don't want to use a (post #207504, reply #4 of 5)

If you don't want to use a hole saw, you could use a router. Either a plunge or drill a starting hole where you won't hit your wire. 

 

Just set it so that there is 1/8" or 1/16" of wood still left. Then use a razor knife to *carefully* cut the final bit out.

 

If the wire is a bit lower you could even cut it all out at once. 

 

I recommend using a new razor knife, it's not as bad as you would think to cut the final bit of wood. 

 

I agree with the other (post #207504, reply #5 of 5)

I agree with the other posters that you probably have the wrong box.  Usually they are steel rectangular boxes, not cast iron.  The actual receptacle is brass with a threaded plug to cover it when not in use.  As for cutting a nice hole in finished wood surfaces I like to make a template for my plunge router.  You can secure the template with double stick tape or hot melt glue.  Good luck.