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-   -   Might of made a HUGE mistake (http://www.diychatroom.com/f17/might-made-huge-mistake-49752/)

cocean 07-27-2009 08:24 PM

Might of made a HUGE mistake
 
I replaced my dryer vent with rigid vent. It goes up through the ceiling between stud bays. I left the wiring for the dryer loose in the same bay without fastening it to the stud then I drywalled. Will the vent pipe get hot enough to melt the wire??

ehoez 07-27-2009 08:26 PM

http://sdinspections.com/wp-content/...nt-300x300.jpg

Si. oui

Scuba_Dave 07-27-2009 08:52 PM

That's a vent pipe on fire
No, it will not get hot enough normally to melt the wire
Clean the pipe every year of lint

dac122 07-27-2009 09:03 PM

If we're talking about the an unsecured wire encased in Romex sheath loose that should not be a problem as, no, the dryer vent is essentially a 0 clearance pipe. On the other hand if you have your hot wires unsheathed and not in conduit or a box that could be an eventual electrical problem. So is it one of these or some other situation?

Scuba_Dave 07-27-2009 09:05 PM

If you had the wall open then the wire should have been secured at that time
If you are having this work inspected they may comment on the loose wore...or not

Yoyizit 07-27-2009 09:27 PM

Quote:

Originally Posted by cocean (Post 307489)
Will the vent pipe get hot enough to melt the wire??

If you wade through this
http://www.cpsc.gov/LIBRARY/FOIA/foia00/os/clothes.pdf
they seem to be saying the max. exhaust air temp. is 180F (82C) which may be a problem if you have 60C wire [in your pre-1985 house] and if the wire is close to the dryer end of the pipe.

Plumber101 07-27-2009 09:32 PM

Did you use screw or tape when putting the pipe together?

How long is the run of pipe?

Scuba_Dave 07-27-2009 10:12 PM

Quote:

Originally Posted by cocean (Post 307489)
I replaced my dryer vent with rigid vent. It goes up through the ceiling between stud bays. I left the wiring for the dryer loose in the same bay without fastening it to the stud then I drywalled. Will the vent pipe get hot enough to melt the wire??

Does it go up the WALL in the stud bay?
Or is it exposed THEN goes into the stud bay at the ceiling?
What is the distance before going into the stud bay?
Exhaust temp is supposed to drop around 25 F every 3' of pipe
So 8' ceiling = drop of almost 60 F

Yoyizit 07-28-2009 11:42 AM

Free temp. probe [and it's digital:laughing:]:

no burn ever at 42C
burned in 30 sec at 54C
5 sec at 60C
1 sec at 71C

cocean 07-28-2009 12:56 PM

The run is a total of about 25 feet. It goes into the stud bay right behind the dryer. The wire is romex and the box is on the other side of the bay. The house was built in 1992. Regardless I'm not going to be able to sleep at night, so i'm going back in and fastening the wire away from the vent pipe. Thanks guys


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