Why are EMT conduit bodies aluminum?

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  #1  
Old 02-06-13, 10:46 PM
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Why are EMT conduit bodies aluminum?

Am I just missing the steel ones or are all EMT conduit bodies aluminum? All the EMT I've seen was steel, and my EMT couplings are steel, but I found two sources for the bodies and they're aluminum. I'll settle for aluminum, but I don't get it.
 
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Old 02-07-13, 01:10 AM
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You're just missing them. The mega-mart big box homecenters generally don't stock the steel or cast iron bodies and often don't even stock all the varieties of conduit bodies.

Also, most of what you might think are aluminum conduit bodies and connectors are in fact made from an alloy known as Zamak which is primarily zinc. These are made by a process called die casting and the material is also generically called pot metal.
 
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Old 02-07-13, 07:16 AM
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Good I'll keep looking . Type C wasn't so easy to find either, and I don't think my local big box store had any EMT bodies.
 
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Old 02-07-13, 01:46 PM
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I'm giving up the search.
 
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Old 02-07-13, 02:22 PM
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If you want a good selection, go to an electrical distributor.
 
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Old 02-07-13, 03:05 PM
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The website of my local electrical distributer ("... Electrical Supply Corp.") says they carry the complete line of products from the listed manufacturers. I checked the websites of four relevant manufactures. One has what I want, except it's aluminum and the other has what I want, except it's non-metallic. The shelf quantity/box quantity of each is 10. If I could buy one aluminum one from them, I'll be lucky.
 
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Old 02-07-13, 05:07 PM
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A large quantity of metallic electrical fittings are made of zinc, including EMT fittings. There is nothing wrong with them, and they work just fine in most applications.
 
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Old 02-07-13, 07:40 PM
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I checked the websites of four relevant manufactures. One has what I want, except it's aluminum
So, what material do you want? Steel? Gray iron? What condulet body are you looking for and in what size?
 
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Old 02-07-13, 09:53 PM
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3/4", type C, set screw, unthreaded. I wanted steel or malleable iron or whatever's most appropriate for common EMT. Now it looks like aluminum is ususally used and I've been told there's no reason not to get the aluminum. I'd still prefer steel because it may be thinner which may help in my situation, but I'm done looking.
 
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Old 02-07-13, 10:25 PM
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If you use steel compression connectors, which has its own value, you can use a conduit body with threaded inlets.

Bridgeport makes a good selection of conduit bodies. Not 3/4" in steel, though, as far as I could tell.
 
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Old 02-07-13, 10:44 PM
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Yeah, the bottom picture in my top post is an aluminum Bridgeport body.

I'm all EMTed out for now. I'm hibernating until the blizzard's over.
 
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Old 02-08-13, 05:45 PM
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I always think of Bridgeport as an economy brand, but think more of Appleton, Killark and Crouse-Hinds more as commercial/industrial brands.

Ordinary Location Conduit Bodies
 
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Old 02-08-13, 05:58 PM
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Bridgeport is ok.......it's Topaz you're thinking of.
 
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Old 02-08-13, 06:48 PM
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Sure, Bridgeport is ok. What's a Topaz?
 
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