Outside raceway

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Twoskinsoneman

Twoskinsoneman

Senior Member
Location
West Virginia, USA NEC: 2020
Occupation
Facility Senior Electrician
An outside raceway installed aboveground... is it considered a dry location?

Further thought... If it is considered a dry location, does it retain that classification if it is only a short section used for protection?

An example would be AC run from an outside box, run inside of PVC to protect it, into a building. Inside the building the PVC does not terminate is just stops. The AC is then run to where ever and terminated properly.

What do you think?
 
Twoskinsoneman said:
An outside raceway installed aboveground... is it considered a dry location?

Further thought... If it is considered a dry location, does it retain that classification if it is only a short section used for protection?

An example would be AC run from an outside box, run inside of PVC to protect it, into a building. Inside the building the PVC does not terminate is just stops. The AC is then run to where ever and terminated properly.

What do you think?
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Wet location.
 
Twoskinsoneman said:
An outside raceway installed aboveground... is it considered a dry location?

Further thought... If it is considered a dry location, does it retain that classification if it is only a short section used for protection?

An example would be AC run from an outside box, run inside of PVC to protect it, into a building. Inside the building the PVC does not terminate is just stops. The AC is then run to where ever and terminated properly.

What do you think?
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wet location skin the romex and box it out top and bottom. Thhn/thwn inside the romex. Or splice in the condulets thwn in between. rediculous huh?
 
quogueelectric said:
wet location skin the romex and box it out top and bottom. Thhn/thwn inside the romex. Or splice in the condulets thwn in between. rediculous huh?
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If I understand your suggestion, it is to remove the jacket from NM and use those conductors in the conduit. If so, this would be a violation of the listing of NM "cable". :) Sorry if I've misunderstood.
 
wbalsam1 said:
If I understand your suggestion, it is to remove the jacket from NM and use those conductors in the conduit. If so, this would be a violation of the listing of NM "cable". :) Sorry if I've misunderstood.
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Not necesarrily a violation of anything in 334, but rather 310.11.;)
 
JohnJ0906 said:
90? conductor in romex, yes. (334.112)
Wet rated conductor? (THHW or similar). Doubtful. What manufacturer uses it in romex?

Southwire, for instance, says nothing about the exact type of insulation on romex conductors.
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Yeah they do....

Conductor insulation is 90?C-rated
polyvinyl chloride (PVC), nylon jacketed.​
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PVC - with a nylon jacket.... Not listed for wet, or even listed. Also no mention of the lead based stabilizers in the sheath or insulation either! Wash your hands before using the bathroom - or eating. ;)
 
e57 said:
Yeah they do....

PVC - with a nylon jacket.... Not listed for wet, or even listed. Also no mention of the lead based stabilizers in the sheath or insulation either! Wash your hands before using the bathroom - or eating. ;)
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Thanks - I missed that, I was looking for something like THHN, XHHW, etc.
 
Nothing in those responses would make me change my mind on allowing guys to strip out NM Cable and use it in a wet location. If they provide me something from the manufacture stating this we can discuss it but just them saying it would not fly.

You strip the NM Cable and in my view you remove its listing for it's intended application. In doing so how do you comply with 310.11?
 
This makes it sound like a bad idea,. though I have done it myself.

http://www.ul.com/katrinafloodwaters/nm.html



In general, cables with PVC insulation and jacket can withstand immersion in clean water for a short period of time without being damaged as long as the ends are not immersed. For example, a building may be subject to rainfall while under construction, and water may come in contact with the outer jacket of nonmetallic-sheathed cable. This is not prohibited by the NEC
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Try section 100 (definitions) under location, should be clear as mud in regard to the differences of cover requirements of damp VS wet on border line issues. You won't find it in the code, but go ahead and apply a little common sense to it!
 
Rockyd said:
Try section 100 (definitions) under location, should be clear as mud in regard to the differences of cover requirements of damp VS wet on border line issues. You won't find it in the code, but go ahead and apply a little common sense to it!
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So are you saying the common sense approach is to allow NM Cable in Wet Locations...?

Wont be my commen sense approach.....I say get the proper wire and do it right the FIRST time.
 
radiopet said:
Nothing in those responses would make me change my mind on allowing guys to strip out NM Cable and use it in a wet location. If they provide me something from the manufacture stating this we can discuss it but just them saying it would not fly.
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It is against the code to strip out NM and then install it in conduit or wiremold, etc. This has never been permitted by code...only by inspectors who are not aware of 310.11

radiopet said:
You strip the NM Cable and in my view you remove its listing for it's intended application. In doing so how do you comply with 310.11?
Click to expand...
In the words of Sarah Palin: "You Betcha".:wink::)
 
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