Spray foam on conductors

[benaround]

Does anyone know if 'Spray Foam' has any adverse affect on the insulation of wires?

The reason for asking is a new local amendment is requiring it on under-

ground feeders etc.

Thanx,

 

[iwire]

It is widely used in this area to seal penetrations and many new homes are fully insulated with spray foam.

I would not worry about it.

 

[dlhoule]

I don't know if it is still on the market, but I can remember reading on a can of spray sealant used for fire stop; not to use on holes containing electrical wires.

That was probably 8 to 10 years ago.

 

[benaround]

thank you

bob and larry and tom

 

[tom baker]

Its not product thats been evaluted by UL. It may deterioate the wires.
Duct seal is the typical product