coming into top of 3R cabinet or wireway

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electrofelon said:
What code section would you cite if someone came into the top of a 3r cabinet or wireway with RGS and standard locknuts?
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I don't see a problem with it if it's inside. I'm not sure it matters if it's outside as long as there's nothing inside of it other than wires. I don't recall off the top of my head if there's any requirement to bring in conduit at the bottom or side of a box if it is outside but what's it going to hurt if it's just wires inside. They would have to be waterproof wires anyway.
 
electrofelon said:
What code section would you cite if someone came into the top of a 3r cabinet or wireway with RGS and standard locknuts?
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If it is in a dry location, it obviously doesn't matter.

In a wet location, as long as it is not above any live parts per 312.2 (whether that's in this enclosure or another one connected to it), and as long as accumulated water can drain per 314.15 (hey, that's 100 pi!), I don't see the violation. Granted, I see it as an obvious bad practice, but I don't see a direct violation of the NEC.
 
Carultch said:
and as long as accumulated water can drain per 314.15 (hey, that's 100 pi!), I don't see the violation. Granted, I see it as an obvious bad practice, but I don't see a direct violation of the NEC.
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The last sentence of 314.15

conduit bodies, and fittings installed in wet locations shall
be listed for use in wet locations.
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iwire said:
The last sentence of 314.15
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So in concept, could a standard locknut be on the top outside, and a sealing locknut be on the bottom inside?

What about a standard locknut sandwich for conduit entries on the bottom of an enclosure? It is below live parts, but the exterior locknut would be in a wet location.
 
K8MHZ said:
Are lock nuts considered to be fittings, and if so, are there lock nuts listed for use in wet locations?
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I have kind of given up on you since the discussion of plasma cutters. :D

In our discussion there we posted a scope which you said you read but disagree with. How can I answer that? :huh: :?


But here we go, from article 100

Fitting. An accessory such as a locknut, bushing, or other
part of a wiring system that is intended primarily to perform
a mechanical rather than an electrical function
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iwire said:
But here we go, from article 100
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Fitting. An accessory such as a locknut, bushing, or other
part of a wiring system that is intended primarily to perform
a mechanical rather than an electrical function

Thank you. I would have looked it up myself but I am busy taking advantage of the weather and doing some stuff outside.

So, that being said, are there locknuts listed for use in wet locations? Or would there have to be a hub or the like instead?
 
K8MHZ said:
Fitting. An accessory such as a locknut, bushing, or other
part of a wiring system that is intended primarily to perform
a mechanical rather than an electrical function

Thank you. I would have looked it up myself but I am busy taking advantage of the weather and doing some stuff outside.

So, that being said, are there locknuts listed for use in wet locations? Or would there have to be a hub or the like instead?
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Sealing locknut should be acceptable.
 
K8MHZ said:
It may work, but is it listed for use in a wet location? All I see is they are raintight. Wet locations also include in direct contact with the earth, and other applications where raintight may not be suitable.
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As could be the case with OP's 3R enclosure as well.
 
kwired said:
As could be the case with OP's 3R enclosure as well.
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Good point.


  1. Which NEMA types correspond to environmental descriptions such as rainproof, driptight, dusttight, wet location, etc.?

NEMA does not cross-reference the type ratings with these environmental descriptions; however, NFPA 70 National Electrical Code has definitions and in some cases cross references for these descriptions.
 
For enclosures in wet locations,
raceways or cables entering above the level of uninsulated
live parts shall use fittings listed for wet locations
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Note that it does not say you have to use fittings listed for wet locations all the time. Only if the raceway comes in above the level of live parts. If there are no live parts wet area fittings are not required.
 
petersonra said:
Note that it does not say you have to use fittings listed for wet locations all the time. Only if the raceway comes in above the level of live parts. If there are no live parts wet area fittings are not required.
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For cabinets in the scope of article 312 I agree with you.

However things change with enclosures under the scope of article 314, the height of the live parts becomes irrelevant

conduit bodies, and fittings installed in wet locations shall
be listed for use in wet locations.
Click to expand...
 
petersonra said:
Note that it does not say you have to use fittings listed for wet locations all the time. Only if the raceway comes in above the level of live parts. If there are no live parts wet area fittings are not required.
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So a 3r junction box installed outdoors that contains no live parts, only splicing, is allowed to have conduits coming out of the top of it with no wet area fittings at all ?
Don't seem right.


JAP>
 
electrofelon said:
Ok so the proposal in the OP wouldn't be "a violation of the wireway" , it would be a "violation of the fitting." So to expand on the topic, what would you cite for installing a nema1 wireway outdoors? 110.3?
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For a wireway

376.10 Uses Permitted. The use of metal wireways shall
be permitted as follows:


(3) In wet locations where wireways are listed for the
purpose.
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