Using pipe insulation on wires near hot ducts?

[weatherby460]

I see people use fiberglass insulation, but it looks kinda tacky. Is it ok instead to use the pipe insulation instead around wires that are close to hot air ducts?

Thanks

 

[Innovate1]

How hot are we talking? If it's too hot for the wires I think it would be too hot for the pipe insulation. That stuff melts at a pretty low temp. But I don't really understand the situation you need this for... A bit more info and some pictures would help.

 

[weatherby460]

Picture attached.

 

[The Cobbler]

as far as I know, you only need to put "something between the wire & duct" to keep the wire from rubbing on the metal. it's not insulating from heat persai

 

[Chilliwack Murray]

The wire needs no insulation. It is rated for at least 75C if not 90. If the air duct ever gets that hit you have much bigger problems.

 

[wyliesdiesels]

Are those flue pipes?

 

[SGKent]

the foam will melt before the wires do; that is why you probably see fiberglass used. What is running in those ducts?

 

[Jim greengo]

Picture attached.

I think that is more for protecting the wires from rubbing,your duct work is not going to get that hot.

 

[Terry D]

I think that is more for protecting the wires from rubbing,your duct work is not going to get that hot.

I agree with you Jim, looks like normal HVAC ducts to me also, defiantly not any kind of a flue pipe.

 

[Dagny]

Don't worry about it not even a little bit.

 

[Milton Shaw]

He could always use asbestos insulation, and that can handle any heat problem he can think of. LOL

 

[s14kev]

I'm assuming HVAC ducts in an unfinished basement? Shouldn't the ducts be insulated instead? Wires generate heat especially when bundled. You want the wires to shed heat not trap it when wrapped up in insulation. Insulating the wires seems counterintuitive

 

[Innovate1]

Those look like HVAC ducts and are smooth where the wire touches them. They don't need any protection. If it was at a joint in the duct I would put something to protect them. Probably would use the foil tape for HVAC ducts to cover the sharp edges and call it good.

 

[BD1]

You could cut a slot in PVC and set over the wires


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[checkthisout]

I'm assuming HVAC ducts in an unfinished basement? Shouldn't the ducts be insulated instead? Wires generate heat especially when bundled. You want the wires to shed heat not trap it when wrapped up in insulation. Insulating the wires seems counterintuitive

What about wires bundled in walls that are insulated with spray foam or fiberglass?

 

[s14kev]

What about wires bundled in walls that are insulated with spray foam or fiberglass?

****! Instant house fire.

Just kidding. I agree since we run wires through insulation all the time. The point is more that shouldn't the duct be insulated rather than the wires.

 

[checkthisout]

****! Instant house fire.

Just kidding. I agree since we run wires through insulation all the time. The point is more that shouldn't the duct be insulated rather than the wires.

Yeah I don't know. They are within the structure and not up against an exterior wall, crawlspace or heated attic so I don't think much benefit would be had from insulating them.

Leaving them **** like that might make a nice warm spot on the floor for the dog to lay.