martim1
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- Hopkinton, MA
In my plant I have an instrument rack outside of a classed area, the conduit however runs through a class1 div1 area then back out. Do the seals need to be poured?
Class 1 Div. 1
- Thread starter martim1
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- Mission Viejo, CA
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- Professional Electrical Engineer
Probably; however see Section 501.15(A)(4) and it's Exception 1 for a full review.martim1 said:
jetskifun said:
The seal material must be a listed compound for use with a sealing fitting. The common practice is to jam a wadding material in to the fitting to prevent the sealant from running down the conduit, and then filling the fitting. The only material I have used is called Chico. The compound must be poured to a thickness of at least 5/8 inch (2005 NEC 501.15(C)(3)).
DUCKMAN said:
NEC 501.5 (A) I would say the seals need to be poured. At the plant I work at we use alot of Chico that you pack the fitting with rock wool then mix the dry powder with water and pour. Cooper Crouse-Hinds sells a Chico SpeedSeal Compound that comes in a squeeze type cartridge the kit contains everthing you need. The nice thing is there is no need to use a packing material, you just squeeze the cartridge to mix and inject the material into the seal off. The cat. no is CHICO SS2 (for 2 oz.) SS6 for 6 oz.
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The correct depth of sealing compound shall be NOT LESS than the trade size of the sealing fitting used (and in no case less than 5/8".)
If a 1" seal fitting is used the sealing compound shall be poured to a depth of 1", 1.5" conduit to a depth of 1.5", etc.
ref 501.15(c)(3)
If a 1" seal fitting is used the sealing compound shall be poured to a depth of 1", 1.5" conduit to a depth of 1.5", etc.
ref 501.15(c)(3)
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