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Old 07-27-2009, 07:24 PM   #1
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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??

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Old 07-27-2009, 07:26 PM   #2
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Might of made a HUGE mistake




Si. oui

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Old 07-27-2009, 07:52 PM   #3
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Might of made a HUGE mistake


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
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Old 07-27-2009, 08:03 PM   #4
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Might of made a HUGE mistake


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?
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Old 07-27-2009, 08:05 PM   #5
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Might of made a HUGE mistake


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
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Old 07-27-2009, 08:27 PM   #6
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Might of made a HUGE mistake


Quote:
Originally Posted by cocean View Post
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.

Last edited by Yoyizit; 07-27-2009 at 08:53 PM.
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Old 07-27-2009, 08:32 PM   #7
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Might of made a HUGE mistake


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

How long is the run of pipe?
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Old 07-27-2009, 09:12 PM   #8
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Might of made a HUGE mistake


Quote:
Originally Posted by cocean View Post
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
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Old 07-28-2009, 10:42 AM   #9
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Might of made a HUGE mistake


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

no burn ever at 42C
burned in 30 sec at 54C
5 sec at 60C
1 sec at 71C
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Old 07-28-2009, 11:56 AM   #10
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Might of made a HUGE mistake


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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