Spray Foam

[John Harrison]

I know you can seal around a breaker box with spray foam. Seriously dont make a mess of it.


Should this be cleaned up??

[Jeffrey R. Jonas]

Yes. There should be no foreign material inside the panel.

[Robert Meier]

Raceways that are subject to different temperature air infiltration are required to be sealed. Not sure if spray foam is listed to be in contact with those conductors but some sort of sealant is required by the NEC. The conductors themselves look like type USE which is not permitted within structures.

300.7 Raceways Exposed to Different Temperatures.
(A) Sealing. Where portions of a cable raceway or sleeve are known to be subjected to different temperatures and where condensation is known to be a problem, as in cold storage areas of buildings or where passing from the interior to the exterior of a building, the raceway or sleeve shall be filled with an approved material to prevent the circulation of warm air to a colder section of the raceway or sleeve. An explosionproof seal shall not be required for this purpose.

338.12 Uses Not Permitted.
(B) Underground Service-Entrance Cable. Underground service-entrance cable (USE) shall not be used under the following conditions or in the following locations:
(1) For interior wiring
(2) For aboveground installations except where USE cable emerges from the ground and is terminated in an enclosure at an outdoor location and the cable is protected in accordance with 300.5(D)

[Joe Funderburk, CMI]

Robert, I don't think the photo illustrates a raceway that needs to be sealed. I would refer that issue to an electrician. It's too weird.

[Bob Elliott]

I would think that makes them double insulated .
That may prevent heat dissipation or am I off base ?

[Robert J. OConnor]

Is that an underground service feeder that goes directly into the service panel?

[Robert Meier]

Originally Posted by jfunderburk

Robert, I don't think the photo illustrates a raceway that needs to be sealed. I would refer that issue to an electrician. It's too weird.

According tot he NEC it requires some type of sealant to keep different temperature air from moving into the panel which could cause condensation. I gave the NEC code section in post #3, 300.7(A). We always use duct seal.