soldering close to conduit


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Old 05-30-14, 04:06 PM
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soldering close to conduit

I need to solder a number of joints on a copper pipe that is about 3" from a 1/2" piece of conduit. I am nervous applying heat in the vicinity. What precautions should I take with the conduit?
 
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Old 05-30-14, 04:08 PM
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Wrap a damp, almost but not dripping, rag around the conduit.
 
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Old 05-30-14, 04:16 PM
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That's what I was going to do, treat it like a nearby solder joint, but I didn't know if that would be sufficient since we are talking about thin wall emt and conductor insulation.
 
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Old 05-30-14, 05:36 PM
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So long as no portion of the rag actually dries out, the temperature of the covered conduit and contents will not go above 212 degrees F.

Once the temperature of the conduit reaches 212 degrees, all the additional BTU that would be absorbed by the conduit will be carried off by the steam from the evaporating water.
 
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Old 05-30-14, 05:42 PM
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Aim the heat away from the conduit. The solder will flow towards the heat.
 
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Old 05-31-14, 02:56 AM
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Ditto on the wet rag . If you need to , keep a bottle of water handy to re-wet the rag .

God bless
Wyr
 
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Old 05-31-14, 04:22 AM
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So long as no portion of the rag actually dries out, the temperature of the covered conduit and contents will not go above 212 degrees F.

Once the temperature of the conduit reaches 212 degrees, all the additional BTU that would be absorbed by the conduit will be carried off by the steam from the evaporating water.
212F is still higher than the 90C rating of the contents of the conduit.
 
 

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