Expose Threads on Rigid Conduit

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Two words, Zinc It:

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Thanks that is helpful, but I was looking more at how many threads are allow to show. In other words should they be threaded all the way in a nipple, box or myers hub?
 
peter d said:
Does it actually work well? I've used it before but I have not used it enough to see if it works or not.
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Seems to. Gives you 6 or 8 years before the rust starts to poke through, from what I notice. Naturally, the rust will start immediately if you don't use it, so it at least makes you look good until the warranty is up and the salesman has had time to sell the customer an annual PM contract. ;)
 
I'm sorry and hate to ask. I'm in the field and don't have the code book. What does the code say at 300.6 (a)
 
Gavino said:
I'm sorry and hate to ask. I'm in the field and don't have the code book. What does the code say at 300.6 (a)
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Why are you in the field at this time on Sunday and where is your book?:confused:

300.6 Protection Against Corrosion and Deterioration.
Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for the environment in which they are to be installed.
Section 300.6 was reorganized and expanded for the 2005 Code to include protection from deterioration. Information on chemical exposure as well as exposure to sunlight for nonmetallic equipment was added to this edition of the Code. Section 300.6 applies generally. For specific applications, it is necessary to review manufacturers' information as well as the particular Code article responsible for the wiring method and equipment under consideration.
(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.
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The cold galv spray works great, shake shake shake the can. You can purchase the cold gavl in a qt can, but it has to be stirred up. The paint on type is better than the spray but messy.
I take my strut and debur the ends with a file or wire wheel.
 
tom baker said:
The cold galv spray works great, shake shake shake the can.
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Why did I suddenly have a picture of 'K.C. and The Sunshine Band' in my head when I read that?:grin:

Make a little cut
Do a little spray...

Shake, shake, shake
Shake, shake, shake
Shake your grey spray
Shake your grey spray
 
mdshunk said:
Make a little cut
Do a little spray...

Shake, shake, shake
Shake, shake, shake
Shake your grey spray
Shake your grey spray
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You've just sunk to new lows with that one. :D

Now if I ever hear that song again I'm going to hear it with those lyrics plugged into it.
 
nakulak said:
the technical data sheet for the CRC Zinc-it doesn't say anything about the compound being electrically conductive. Is it ?

http://www.crcind.com.au/catalogue.nsf/(TDS)/2085%20Zinc%20It/$FILE/TDS.pdf
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What do you think is going to happen when you assemble the fitting? Much spray going to be left on the mating surfaces? It would be at least as good of a contact (or better) than a locknut on a painted enclosure. Anyhow, it says "zinc rich compound". Zinc is conductive, last I checked.
 
no rule about "how many threads are showing" that I'm aware of, only that the connection must be wrench tight.

But for hazardous classifications minimum 5 threads fully engaged.
 
mdshunk said:
Why did I suddenly have a picture of 'K.C. and The Sunshine Band' in my head when I read that?:grin:

Make a little cut
Do a little spray...

Shake, shake, shake
Shake, shake, shake
Shake your grey spray
Shake your grey spray
Click to expand...

That is the best as far as wit.....that is hilarious...:D... I remember that song and the way you posted is great....I am still laughing.....
 
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