expanding foam
- Thread starter elecold
- Start date
- Status
John120/240
Senior Member
- Location
- Olathe, Kansas
I would not expect expanding foam to have any adverse effects other than temperature derating on wires in a raceway.
- Occupation
- Licensed Electrician
No.
Sierrasparky
Senior Member
- Location
- USA
- Occupation
- Electrician ,contractor
Should expanding foam be inside a raceway?
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
Using open cell foam as a duct seal? :lol:
- Occupation
- Licensed Electrician
With out a doubt, yes. If I or some other put it there I would expect nothing other.
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
- Occupation
- Licensed Electrician
No doubt. That stuff gets everywhere you don't want it to. Can't wash it off, can't scrub it off. I have lost more than one pair of good jeans and a shirt fighting the battle.
I was just going to ask an expanding foam question and saw this post......so.....
Number of conductors through a bored opening............in reference to a cable or several cables going through a plate... , what if said cables are now
encapsulated in this foam (heat dissipation?)........
http://www.homedepot.com/p/GREAT-ST...ng-Foam-Sealant-345372/202023037#.Uk06VBw59IE
Number of conductors through a bored opening............in reference to a cable or several cables going through a plate... , what if said cables are now
encapsulated in this foam (heat dissipation?)........
http://www.homedepot.com/p/GREAT-ST...ng-Foam-Sealant-345372/202023037#.Uk06VBw59IE
RICK NAPIER
Senior Member
- Location
- New Jersey
Well for NM cable 334.80 would apply.
Where more than two NM cables containing two ormore current-carrying conductors are installed, withoutmaintaining spacing between the cables, through the sameopening in wood framing that is to be sealed with thermalinsulation, caulk, or sealing foam, the allowable ampacityof each conductor shall be adjusted in accordance withTable 310.15(B)(3)(a) and the provisions of 310.15(A)(2),
Exception, shall not apply.Thank you Rick
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