Class I Division I material

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Guyute

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Ft Collins, CO
I need suggestions. I have two rigid pipes coming from underground through concrete into a single gang fd box. Unions are two wide in diameter. How do I install these pipes into the box. I can't twist the box onto two pipes. The pipes are 1-1/2" apart Center to Center.
 
Class 1 Div 1 Receptacle ?
may show my ignorance here... but won't seal-offs be problem also... with the conduits that close.
 
augie47 said:
Class 1 Div 1 Receptacle ?
may show my ignorance here... but won't seal-offs be problem also... with the conduits that close.
Click to expand...
Not ignorance... if the conduits go underground, they likely leave the C1D1 area into a non-classified area, requiring seals to prevent the transmissions of gasses, etc.

Perhaps seal hubs: http://www.crouse-hinds.com/catalog/PDFS/Fittings_page 155.pdf

As for solution of entry, the typical method is box is turned onto one conduit run and unioned to the other.
 
Smart $ said:
Not ignorance... if the conduits go underground, they likely leave the C1D1 area into a non-classified area, requiring seals to prevent the transmissions of gasses, etc.

Perhaps seal hubs: http://www.crouse-hinds.com/catalog/PDFS/Fittings_page 155.pdf

As for solution of entry, the typical method is box is turned onto one conduit run and unioned to the other.
Click to expand...
but is a seal off not required at the receptacle ? If the conduits are close enough to enter a FD box(SG) and are too close for a union, they would likely be too close for a seal-off (if one is required)
 
augie47 said:
but is a seal off not required at the receptacle ? If the conduits are close enough to enter a FD box(SG) and are too close for a union, they would likely be too close for a seal-off (if one is required)
Click to expand...
Did you look at the pdf of seal(-ing) hubs that I linked?
 
Smart $ said:
Did you look at the pdf of seal(-ing) hubs that I linked?
Click to expand...

opps: nope.. rude of me but just an oversight.
good product and relative here
thanks
(I think I've determined that this is not a good posting day for me)
 
augie47 said:
opps: nope.. rude of me but just an oversight.
good product and relative here
thanks
(I think I've determined that this is not a good posting day for me)
Click to expand...
Not too much of an oversight though; the unions can’t be between the seal and grade anyway, hub-type or otherwise. As so often happens with classified locations there is not enough description of the actual conditions to give a solid answer.

Personally, I find the Division 1 suspect; however, in this case, Division 2 would pretty much cause the same problems for a receptacle outlet. In fact, with regard to unions being too large, unclassified would be a problem too. Without a much better description of the total installation, any answer is pure blind speculation.
 
Sorry first time I could get back. My issue is that the project is a waste water treatment plant. The area that is C1D1 is actually not the area I am having this problem. The spec book for the job is requiring me to use FD boxes and and RMC in all buildings regardless of Classification. The pipes in question are not in a C1D1 area therefore no sealoffs are necessary. However the tightness of the conduit is an issue. I like the idea of spinning on the box and unioning the other pipe, but I tend to be a bit meticulus in my installations and that would look poor. However, I see no other alternative. Thanks for the discussion.
 
If it's not a classified area, I'd give consideration to rigid set-screw connectors.
 
Never heard of those. I have used a compression type connector for rigid, but not set screw. My first thought was to use the compression type but the female threaded entries into the FD box are very close together and I don't know if the compression nuts would hit. I need to find a spec on these connectors
 
Appleton Cat # is SNTC- (size)
(in using these you need to consider 314.23 requirements)
 
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