Mounting fixtures on round bell boxes

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electricguy61

electricguy61

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Remotely running business in Bay Area, CA from Med
I'm bidding a job where I will need to run rigid conduit along fence posts for lighting. I don't know a good way of mounting a standard "outdoor" fixture, that is designed to be flush mounted to a recessed box in a wall, to a 4" round bell box. (The customer would like to use something more decorative then the standard hub mounted lamp holders)

Any suggestions panel? The winning entry will be taken, first class, to the nearest Starbucks for a "grande" cup of Joe!

Thanks
 
The best I can think of is get some 1/8" sheet aluminum and cut disks just a little larger than the diameter of the fixture.

Now cut a hole out of the the center of the disk smaller than the diameter of the round bell box.

Round bell boxes usually have extra 8-32 holes, you could use two to mount the aluminum 'donut' and another two to mount the fixture bar.

Once mounted the fixture will set against the disk.

I would silicone the top and sides along with providing a drain hole on the bottom.

If I am the winner can you make it Tequila in place of Starbucks? ;)
 
iwire said:
The best I can think of is get some 1/8" sheet aluminum and cut disks just a little larger than the diameter of the fixture.

Now cut a hole out of the the center of the disk smaller than the diameter of the round bell box.

Round bell boxes usually have extra 8-32 holes, you could use two to mount the aluminum 'donut' and another two to mount the fixture bar.

Once mounted the fixture will set against the disk.

I would silicone the top and sides along with providing a drain hole on the bottom.

If I am the winner can you make it Tequila in place of Starbucks? ;)
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I'd thought of the flat sheet stock, but cutting out round disks and making them look proffesional would be difficult. Though I could perhaps use a hole saw.

Little early for tequila, isn't it? Oh yeah, "tequila sunrises"!
 
The inner circle could be done with a hole saw, the outer edge I agree could be difficult.

A jig saw with a circle cutting jig would work with some clean up after.

festool-circle-cutter-490118.jpg


A 'Fly Cutter' in a drill press would be great if you can find one with a large enough diameter.

Sears sells this one.

00925293000


It must be in a drill press and the speed needs to be low like 100 - 150 rpm for a 6" circle.
 
how about finding a lighting fixture that doesn't need a box? We've done then with HID's a lot. Haven't ever looked to see if there are any incandescents available. But they are designed to be piped right into.

good luck
 
andycook said:
I'd thought of the flat sheet stock, but cutting out round disks and making them look proffesional would be difficult. Though I could perhaps use a hole saw.

The outer diameter could be cut with a larger hole saw possibly??

If the boxes are to remain exposed there is an issue of the enclosure listing and gasket material. from a practical point silicon may be serviceable but I would run that by the AHJ before doing all that work.


Charlie
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Charlie are you saying that 1/8" sheet aluminum would be less safe or less water resistant than the wood or brick that would normally close in that space?
 
iwire said:
Celt how would that help with surface mouted boxes? (on a fence post no less)
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"(The customer would like to use something more decorative then the standard hub mounted lamp holders)"

The backplate will probably be larger than the box, the plate will compensate for that.
 
iwire said:
Charlie are you saying that 1/8" sheet aluminum would be less safe or less water resistant than the wood or brick that would normally close in that space?
Click to expand...

I was hoping you weree still around


My thought is

if the enclosure is surface mounted on the fence, and typically a (Bell or Stonco) box would have a mfg gasket and (designed ) cover between the , how would that effect the installation listing wise if a decorative canopy type wall fixture (luminair) is mounted.

regarding the aluminum plate (from a practical point) it does appear serviceable. but IMO an inspector could question it (location wise). These boxes are designed to have a gasket and cover .


I thought it was a good question. Im interested to hear responses!!


Charlie
 
andycook said:
Thanks Celtic. You win the coffee! Where do I send the cup?
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WOW..thanks Andy.

Where to send the coffee, hmmm.....honestly, I don't drink it - can't even stand the smell of coffee.

You keep the coffee and "have one on me" :)
 
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