It has come to my attention that there are NO rain tight fittings made for E.M.T. conduit above 2". If we are to provide a rain tight connection in conditions that warrent such a connector(outdoors) what are we "The Contractor" to use to satisfy local and National code requirements? I have checked with several manufactures on this issue and they tell me they are working to obtain a U.L. listing, but they dont plan to start work on this process until sometime around the first of the year 2006.
Raintight fittings
- Thread starter jmohr
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petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: Raintight fittings
RGC, RNC, or IMC comes to mind.
RGC, RNC, or IMC comes to mind.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: Raintight fittings
It is THE answer though.
It is THE answer though.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: Raintight fittings
There is obviously a reason UL revoked their approval on these products. Why would an AHJ accept a product for a use the testing agency has tested it for and found it to be unacceptable?
- Location
- Illinois
- Occupation
- retired electrician
Re: Raintight fittings
I'm sorry, but I still think that this whole issue is bogus. A threaded rigid conduit coupling is less watertight than the old type of compression couplings. The code also expects that water will get into the raceway because there is a rule that requires it to be arranged to drain in wet locations.
Don
I'm sorry, but I still think that this whole issue is bogus. A threaded rigid conduit coupling is less watertight than the old type of compression couplings. The code also expects that water will get into the raceway because there is a rule that requires it to be arranged to drain in wet locations.
Don
Re: Raintight fittings
This is the article and section mentioned by Don.
Think about it, we have to use these new designed fittings to supposedly make an EMT installation raintight, but we have to drain the water out of it. :roll:
Roger
This is the article and section mentioned by Don.
Makes a whole lot of since to worry about a fitting doesn't it.
Think about it, we have to use these new designed fittings to supposedly make an EMT installation raintight, but we have to drain the water out of it. :roll:
Roger
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: Raintight fittings
One of my first electrical jobs I replaced 4S boxes with emt setscrew connectors with bell boxes and compression connectors. This was in an underground vault.
Then the boxes and lights filled with water from condensation, the locker room lights had 3-4" in the globe.
Lesson learned? watertite fittings keep water in as well as out.
I now drill small drain holes at the bottom of all low points, and for wet locations, use GFCI protection for the circuit, including lights and fans.
One of my first electrical jobs I replaced 4S boxes with emt setscrew connectors with bell boxes and compression connectors. This was in an underground vault.
Then the boxes and lights filled with water from condensation, the locker room lights had 3-4" in the globe.
Lesson learned? watertite fittings keep water in as well as out.
I now drill small drain holes at the bottom of all low points, and for wet locations, use GFCI protection for the circuit, including lights and fans.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: Raintight fittings
I usually tell people who install cabinets outside to drill a few weep holes in the bottom of a cabinet to let out whatever water either gets in or condenses inside the box. It is just about guaranteed that at some point water will get inside, and it is far better for it to have someplace to go rather than just sitting there.
They make drains you can install in conduit low points as well. But, except in hazardous areas, they seem overkill to me, when a simple hole will work quite well.
I usually tell people who install cabinets outside to drill a few weep holes in the bottom of a cabinet to let out whatever water either gets in or condenses inside the box. It is just about guaranteed that at some point water will get inside, and it is far better for it to have someplace to go rather than just sitting there.
They make drains you can install in conduit low points as well. But, except in hazardous areas, they seem overkill to me, when a simple hole will work quite well.
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