Holy Smoke Batman - Chimney Flue Top Draft Inducer Fan

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tonype

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Has anyone ever powered a chimney flue top draft inducing fan? I am concerned about the non-metallic sheathed cable at the final connection - appears to be soot covered and possibly cracking. Any insight would be appreciated.
 

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Looks pretty bad to me. Is the NM rated for outdoor and UV exposure?
I can't see running it through the exhaust stream as being compliant.
Ambient temp derating??
 
And chafing. It's days are numbered.

Does the fan have any kind of means for connecting liquid tight or similar?
 
Aside from the installation methods, why would anyone want to have a chimney that performs so badly that it needs electricity to make it work properly in the first place?!? Is whatever this is venting shut down automatically on loss of power?
 
PetrosA said:
Aside from the installation methods, why would anyone want to have a chimney that performs so badly that it needs electricity to make it work properly in the first place?!? Is whatever this is venting shut down automatically on loss of power?
Click to expand...

I have never come across this, though looked online and saw a few manufacturers. I agree with you on the the concerns.
 
tonype said:
Has anyone ever powered a chimney flue top draft inducing fan? I am concerned about the non-metallic sheathed cable at the final connection - appears to be soot covered and possibly cracking. Any insight would be appreciated.
Click to expand...

It looks like it might be UF to me. Even so, Article 338 sends us to Parts II and III of Article 334. 334.30(B)(2) limits unsupported length to 4.5 feet and only within an accessible ceiling.
 
Possibly part of a pellet stove insert?

Stupid idea that some of them require a powered exhaust...I know this because I inadvertently flipped a breaker that powered the pellet stove exhaust.
Needless to say I was surprised when a ladder truck pulled up in front of the house :slaphead:
 
We have a chimney-top draft fan on a large boiler in an old school. Much cheaper than constructing a new chimney. There is either a rotation detector or a flow relay on it so that if it isn't running the fuel gas valve is tripped off. There is a timer used to let the draft fan run before the gas is turned on.

And it ain't wired with NM/UF
 
Similar to fmtjfw's situation: The boiler room flue stack was too small to handle the demand. A roof top fan was installed to increase the draft. And NO it wasn't wired with NM or UF.
 
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