Runnin' wire

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  #1  
Old 09-22-02, 04:46 PM
H
hammy
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Runnin' wire

Is it OK to run Romex near a heat duct from an oil furnace? Is there any chance that the NM would melt???

thanks!
 
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Old 09-22-02, 05:30 PM
J
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It's probably okay. Most heating ducts don't get very hot (but I'm not very familiar with oil furnaces). It could depend on how close this duct is to the furnace. But Romex insulation is good up to 90 degrees C (194 degrees F). It's unlikely that this duct gets that hot.

One more note -- if this cable runs alongside of the duct for a significant distance, you may need to derate the cable (i.e., use heavier gauge wire than would otherwise be required).
 
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Old 09-22-02, 06:58 PM
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hammy
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Thanks. I guess if you don't hear from me it the house burnt down! Na. I'm going to eventually measure the temperature of the heating duct itself once my tentants turn the heat on. You are right about the derating, but I need the temperature to know just how much to derate it.
 
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