Mike Lamb Posted September 11, 2014 Report Share Posted September 11, 2014 Is this okay? Or might it cause overheating of the conductors? Click to Enlarge 55.29 KB Quote Link to comment Share on other sites More sharing options...
Marc Posted September 11, 2014 Report Share Posted September 11, 2014 I don't think there's an overheating issue but it does remind me of AC guys who punch a hole in cast iron vent stacks to run their condensate line into. You're supposed to use the proper fitting. They're called seal fittings in the oil field. Marc Quote Link to comment Share on other sites More sharing options...
Ben H Posted September 11, 2014 Report Share Posted September 11, 2014 Think they were trying to stop water, or just an air sealer going nuts? Quote Link to comment Share on other sites More sharing options...
Jim Port Posted September 12, 2014 Report Share Posted September 12, 2014 Conduits exposed to difference in temperature areas are required to be sealed to prevent the air exchange. Quote Link to comment Share on other sites More sharing options...
hoosier inspector Posted September 12, 2014 Report Share Posted September 12, 2014 An enclosure needs to "be free of easily ignitable material". I'd call it out. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted September 12, 2014 Author Report Share Posted September 12, 2014 Think they were trying to stop water, or just an air sealer going nuts? There was no signs of water. I usually see the entry stuffed with a gray putty. An enclosure needs to "be free of easily ignitable material". I'd call it out. I did not think of that. Is there a definition of, "easily ignitable material?" Quote Link to comment Share on other sites More sharing options...
hoosier inspector Posted September 12, 2014 Report Share Posted September 12, 2014 Think they were trying to stop water, or just an air sealer going nuts? There was no signs of water. I usually see the entry stuffed with a gray putty. An enclosure needs to "be free of easily ignitable material". I'd call it out. I did not think of that. Is there a definition of, "easily ignitable material?" Good question, they should have specified a flammability rating. However, I just did a little research and found out some of the foams have flame retardant. I got this off the American Chemistry Council's website; Does the cured sealant pose a fire hazard? Is it flammable? Insulating foam sealants typically contain flame retardants and when installed properly, are designed to meet all applicable building and fire code regulations Installed cured product is combustible and will typically begin to thermally degrade at temperatures above 240?F/116?C. In addition, the unreacted chemical constituents in the can may be combustible, so you should carefully read the instructions on the product label and follow them with respect to avoiding installations in areas exposed to high heat, such as around fireplaces, heaters, radiators, heat lamps, recessed lighting, bare copper wires, or inside electrical boxes. So I guess we need to find the used can and read the label;) Quote Link to comment Share on other sites More sharing options...
plummen Posted September 19, 2014 Report Share Posted September 19, 2014 Id use thumb gum myself Quote Link to comment Share on other sites More sharing options...
Scottpat Posted September 19, 2014 Report Share Posted September 19, 2014 I would not even note it in my report. IMVHO,this is in the same category as loose door knobs and cabinet pulls! Quote Link to comment Share on other sites More sharing options...
rjbrown2 Posted September 19, 2014 Report Share Posted September 19, 2014 I think one of the grand arbiters of questions like 'Is this material easily ignitable?' in the US is the UL testing protocols and listings. ASTM too... They put numbers to the flame spread and smoke generation characteristics (optical density) for various products and materials that are presented to them for their published testing procedures. When I used to work for Ma Bell and her children we would submit cable designs for the infamous Steiner Tunnel Test (UL 723 I think) Quote Link to comment Share on other sites More sharing options...
Eric B Posted September 20, 2014 Report Share Posted September 20, 2014 Mike, The foam alone is not going to cause overheating. If overheating did occur there'd be another problem going on independent of the foam. Even it the conduit was stuffed with yesterday's Tribune I probably won't get too concerned. But then again I don't wear a cape and mask trying to save everyone from all kinds trivial issues. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted September 20, 2014 Author Report Share Posted September 20, 2014 Mike, The foam alone is not going to cause overheating. I asked. Now I think I know. Even it the conduit was stuffed with yesterday's Tribune I probably won't get too concerned. How about last week's Tribune? But then again I don't wear a cape and mask trying to save everyone from all kinds trivial issues. Translate that. Is this supposed to have something to do with the OP or something else? Quote Link to comment Share on other sites More sharing options...
Marc Posted September 21, 2014 Report Share Posted September 21, 2014 I'm sure Eric's just trying his hand at entertaining. That's a big part of what goes on here. Marc Quote Link to comment Share on other sites More sharing options...
plummen Posted September 21, 2014 Report Share Posted September 21, 2014 They do actually make expending foam rated for use as a firestop,But Ive never used it. Quote Link to comment Share on other sites More sharing options...
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