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Old 06-04-2018, 02:22 PM   #41
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I can only imagine the trauma Tedesco would suffer, seeing that work.
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Old 06-04-2018, 02:23 PM   #42
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Quote:
Originally Posted by 99cents View Post
Two words - teck cable.


Not in Cook County
Extension cords not allowed


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Old 06-04-2018, 02:23 PM   #43
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I can only imagine the trauma Tedesco would suffer, seeing that work.


Whoís Tedesco


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Old 06-05-2018, 01:26 AM   #44
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Whoís Tedesco


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Joe is one of my friends on my homepage. I think like page 3 or so.....
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Old 06-05-2018, 03:23 AM   #45
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What a dogs breakfast !
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Old 06-07-2018, 12:11 AM   #46
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Not in Cook County
Extension cords not allowed


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It's the miracle cable. Throw everything else away.
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Old 06-07-2018, 01:52 AM   #47
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It's the miracle cable. Throw everything else away.


Are you guys able to use it in schools and hospitals?


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Old 06-07-2018, 06:38 AM   #48
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Are you guys able to use it in schools and hospitals?


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Why not? Plenum rating might be up for discussion, I dunno.

As far as boom proof goes, no problem.
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Old 06-07-2018, 09:30 PM   #49
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Teck is FT4 which is sort like American CMR.

Boomproofing requires the really expensive connectors and epoxy though.
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Old 06-10-2018, 01:09 PM   #50
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Teck is FT4 which is sort like American CMR.

Boomproofing requires the really expensive connectors and epoxy though.
How do the red seals compare in cost to EYS fittings?
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Old 06-10-2018, 01:49 PM   #51
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You get a gold star

Just glad we could contribute and share knowledge with other tradesmen.


300.6(A) Ferrous Metal Equipment.
Ferrous metal raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, metal elbows, couplings, nipples, fittings, supports, and support hardware shall be suitably protected against corrosion inside and outside (except threads at joints) by a coating of approved corrosion-resistant material.

Where corrosion protection is necessary and the conduit is threaded in the field, the threads shall be coated with an approved electrically conductive, corrosion-resistant compound.


Informational Note: Field-cut threads are those threads that are cut in conduit, elbows, or nipples anywhere other than at the factory where the product is listed.


The code book gives this paste as an example.




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FYI

344.10(B)(1)

you can't tell in that picture if that's a "severe"corrosive environment. or is there a code reference i'm missing where all rigid needs coated, because if there is i would really like to use it when foremen won't get grease

and don't forget the word "Approved" they used

i paint and grease all my threads but the reference you posted does not mean all field cut threads must be greased to be code compliant
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Old 06-10-2018, 03:07 PM   #52
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Default Whats wrong in this picture? 😊 Whose firing on all 8 cylinders?

Quote:
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FYI

344.10(B)(1)

you can't tell in that picture if that's a "severe"corrosive environment. or is there a code reference i'm missing where all rigid needs coated, because if there is i would really like to use it when foremen won't get grease

and don't forget the word "Approved" they used

i paint and grease all my threads but the reference you posted does not mean all field cut threads must be greased to be code compliant




Look in the NEC Handbook under that article.
They use the word ďshallĒ
And they also state it has to be electrically conductive, because letís not forget the GRC Galvanized Rigid Conduit is meant not only to protect the conductors but to be a low resistance path to ground, to ensure the over current protection (breakers / fuses) trip when needed...

Iíve heard plumbers pipe dope which sounds , and I like a good Idea but I would also say not so good to maintain a continuous conductive path, and we can argue ground bushings would solve that but none the less we are all here to become masters at what we do so an intellectual debate is always welcome



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Old 06-10-2018, 03:46 PM   #53
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Look in the NEC Handbook under that article.
They use the word “shall”
And they also state it has to be electrically conductive, because let’s not forget the GRC Galvanized Rigid Conduit is meant not only to protect the conductors but to be a low resistance path to ground, to ensure the over current protection (breakers / fuses) trip when needed...

I’ve heard plumbers pipe dope with sounds like a good Idea but I would say not so good to maintain a continuous conductive path, and we can argue ground bushings would solve that but none the less we are all hear to become masters at what we do so an intellectual debate is always welcome



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i agree the effective ground fault current path must be maintained

but handbook explanatory material(blue text) if that is what you are referring to is not code. i will check my code handbook tomorrow if i remember.

sidebar
take a look at crouse hinds stl8, this is commonly used. its not conductive but is says it does not inhibit ground continuity.

and then the data sheet (top right bullet point) says complies with 300.6 http://www.cooperindustries.com/cont...lubricants.pdf

the grease does not prevent the conduit from making good electrical contact with the other one

if you ever tow trailers, consider how dielectric grease works in trailer connectors
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Last edited by Wiresmith; 06-10-2018 at 03:55 PM.
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Old 06-10-2018, 04:10 PM   #54
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The standard that Iíve tried to set for my company is to use the factory galvanized threads under ground, and ďtryĒ to have all field cut threads above ground.

But none the less itís metal and itís going to rust, it being galvanized just means itís been plated similar to chrome plating. But once we cut through the plating and into the metal itís exposed to oxygen and humidity and bam here comes the rust...

For conduits being buried it becomes an issue
Anti-seize Iím not sure would solve the issue 100% .

Methods of painting, grease, pipe dope and in the code they suggest a tar like material, I assume similar to the stuff they use on foundation walls...

We can argue two things, we want to be masters at what we do.
Vs
Bury it, no one will see it and it will break down over time and bam , more work for us...

I just canít be that chop shop with my craft though 🤷🏻*♂️


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Old 06-10-2018, 04:22 PM   #55
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The standard that I’ve tried to set for my company is to use the factory galvanized threads under ground, and “try” to have all field cut threads above ground.

But none the less it’s metal and it’s going to rust, it being galvanized just means it’s been plated similar to chrome plating. But once we cut through the plating and into the metal it’s exposed to oxygen and humidity and bam here comes the rust...

For conduits being buried it becomes an issue
Anti-seize I’m not sure would solve the issue 100% .

Methods of painting, grease, pipe dope and in the code they suggest a tar like material, I assume similar to the stuff they use on foundation walls...

We can argue two things, we want to be masters at what we do.
Vs
Bury it, no one will see it and it will break down over time and bam , more work for us...

I just can’t be that chop shop with my craft though ����*♂️


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3m makes tape for corrosion protection, some people use it over joints for underground, some locals require it.

one thing i have been trying to figure out is if the zinc or graphite based greases are better than the copper for galvanized steel conduit. because copper actually corrodes steel, albeit being such a small amount compared to the entire conduit i'm not sure if it has any real negative effect.

i actually cold galv my field threads too, and the inner lip where i rounded it over, it could rust from the inside out too. if you cold galv you have to let your pipe set a little while before assembly, you can try to make up all your pipes before assembling all of them to give the first one time to cure a little. instead of making one or 2 pipes, assembling and then making more.

most manufactures actually use cold galv on there threads
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Old 06-10-2018, 04:25 PM   #56
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http://www-public.tnb.com/shared/inst/ta03004-tb2.pdf

i wish this stuff would say for galvanized, being ul listed
. i use it anyway but it would be nice
its zinc based (like galvanizing)

i think it may be the best kind of grease to use
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