Thhw or thwn failure in wet conduit

[rib]

Thanks again everyone for all of the good info. I now need to go finish the job and be done with it. Later.

 

[ptonsparky]

Freeze/thaw cycles won't help the wires at all. Sometimes the conduits split and drain the water but often enough the wires are damaged before this happens.

 

[glene77is]

In my opinion one reason is because few ECs seal each end of the conduits letting air pass through the raceway, the water in the air condenses and collects in the low spots.

Iwire,

I pack 'Duct Seal' (fibrous, oily, sealing clay putty) into the conduit of refrigerator boxes so the condensation does not drip/seep into the switch devices.

...

 

[ptonsparky]

The reason plumbers keep water in is because they use cleaner then glue on their pipes. If we took the time to properly glue and duct sealed each end we wouldn't have a problem either.

 

[LarryFine]

The reason plumbers keep water in is because they use cleaner then glue on their pipes. If we took the time to properly glue and duct sealed each end we wouldn't have a problem either.

All the primer/cleaner and glue in the world won't stop condensation.

 

[480sparky]

All the primer/cleaner and glue in the world won't stop condensation.

Sure it will... file the pipe with it, and no water can condense!

 

[tonyou812]

I worked for this forman once that made us use the purple stuff first, ....man that used to drive me bananas.

 

[ptonsparky]

All the primer/cleaner and glue in the world won't stop condensation.

That is why you seal it to. Instead of a pipe full of water you get a cup in 70', maybe.