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Old 02-09-2015, 02:11 PM   #21
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I don't think I'd bother trying to weld it
In all my years in this trade, I have never had to weld anything. We used porta bands and fasteners for everything.

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Originally Posted by Rollie73 View Post
Me either. I would hold out for some regular strut for welding. This new stuff certainly has it uses though.
Why weld?

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Works for me, not sure what McClary is drinking tonight....
I have had issues too. Sometimes when I use the "quote" function, I get a blank response field.
They are supposed to be working on it.
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Old 02-09-2015, 09:31 PM   #22
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In all my years in this trade, I have never had to weld anything. We used porta bands and fasteners for everything.



Why weld?
Some sites in my area.....two of my fairly regular customers.....will not accept bolted together brackets around their machinery.

One is a crusher system....obviously too much vibration on that one for bolting stuff together, and the other is in a pulp mill. We have to use all stainless parts in certain parts of the building and they want welded brackets.....we even have to weld the brackets to the machinery in these plants.
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Old 02-10-2015, 01:49 AM   #23
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Our shop does welding as well. Most of us grew up around farms so it's really second nature to just weld it together if it needs it. Transformer stands, stanchions for LARGE ag services made out of square tubing, etc.
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Old 02-10-2015, 02:16 PM   #24
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I worked for/with a guy that decided to weld up a test stand he was building. It was a very nice (big) Hoffman enclosure with a unistrut stand he was to build.

It turned out to be the biggest hack job I had ever seen.
The beautiful white interior on the enclosure was gray by the time he was done and he blew through the enclosure several times.

I can see why a customer would want it welded, but I would reassure that welds break as easy as bolts and screws come loose.
I never welded anything and if was to start all over again, I would still not weld any electrical equipment. ( I guess if I was a good welder and was instructed to weld, I would)
Its the way I was taught I guess.
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Old 02-10-2015, 02:45 PM   #25
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We don't weld to the enclosure. If it's on something like a crusher or similar high vibration equipment we'll tack the nuts after the enclosure is bolted on.
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Old 02-10-2015, 11:02 PM   #26
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I was the welder at one of our pulp and paper mill sites for 4 years. We welded everything from conduit and tray supports to structural and rigging supports. Worst job was welding a 20' long 8" I beam above a paper machine for crane buss. Overhead welding, hot and sweaty. Got zapped a few times
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Old 02-11-2015, 09:52 PM   #27
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I was the welder at one of our pulp and paper mill sites for 4 years. We welded everything from conduit and tray supports to structural and rigging supports.
Welding seems to be the normal thing in around pulp and paper mills for some reason.
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Old 02-11-2015, 10:08 PM   #28
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Originally Posted by John Valdes View Post
I worked for/with a guy that decided to weld up a test stand he was building. It was a very nice (big) Hoffman enclosure with a unistrut stand he was to build.

It turned out to be the biggest hack job I had ever seen.
The beautiful white interior on the enclosure was gray by the time he was done and he blew through the enclosure several times.
I've never welded an enclosure to a uni-strut stand. I have welded up stands and bolted the enclosure to it then tacked the nut and bolts together though.

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I can see why a customer would want it welded, but I would reassure that welds break as easy as bolts and screws come loose.
I've never seen a good, proper weld break as easy as a bolt will come loose. Not to say that they can't break but if properly done.....the weld is usually as strong as the surrounding metal.
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Old 02-12-2015, 01:41 PM   #29
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Originally Posted by sparky970 View Post
I was the welder at one of our pulp and paper mill sites for 4 years. We welded everything from conduit and tray supports to structural and rigging supports. Worst job was welding a 20' long 8" I beam above a paper machine for crane buss. Overhead welding, hot and sweaty. Got zapped a few times
Is welding conduits an approved method for support?
I have been under the impression that welding of conduits for support is a no no?
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Old 02-13-2015, 01:17 AM   #30
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Is welding conduits an approved method for support?
I have been under the impression that welding of conduits for support is a no no?
Conduit supports
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Old 02-13-2015, 01:26 PM   #31
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Conduit supports
Yes. Can you weld conduit to a metal ceiling joist for example, instead of using a beam clamp?

I had a guy recommend once on a job to weld the conduit instead of strapping them down with clamps.
I told him he was nuts and that electricians never weld conduit.
So that's my question.

For the record we used beam clamps and did not weld the conduit to the joist.
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Old 02-13-2015, 01:43 PM   #32
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I don't think welding is an approved method. My thoughts are simply there is no way to know if the weld has penetrated the conduit and caused a slag build up. And burrs....
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Old 02-13-2015, 07:56 PM   #33
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I don't think welding is an approved method.
It's not, 300.18(B).
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Old 02-14-2015, 02:12 PM   #34
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I don't think welding is an approved method. My thoughts are simply there is no way to know if the weld has penetrated the conduit and caused a slag build up. And burrs....
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It's not, 300.18(B).
Glad I straightened that guy out. It was EMT after all.
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