Conduit In Attic Versus Crawl

Active 1 year 5 months ago.

Conduit in attic versus crawl.

Just like you do not need a running board when you staple wire on the bottom of joists in a basement if they are boxed in or in a crawl space. Crawl space today with a few guys i work with. I vote for the attic. Strap ducts out of insulation with 3 ductstraps per specifications.

Interpretation of conduit vs raceway wet location vs outdoor vs nm nm b. This is especially true when you need to curve the wires around a bend which further limits the space inside the conduit. I can look it up but i think it is the same rule that relates conduit on steel decking with the 1 5. As far as the other subject to mechanical damage.

They are not subject to mechanical damage in. Everyone including myself preferred to have the ductwork in the attic as opposed to the crawl space. Rarely will a sealed foam insulated attic deviate more than 15 degrees from the living space temperatures below it. Compare that with the daily 140 degree temperatures found in vented attics.

The volume of regulators inside the conduit is limited by code so it might not work to use conduit. So when we have a choice we prefer hvac systems located under the house. Insulate and air seal the floor with open cell foam put ductwork and mechanicals in the attic install a radiant barrier and mastic seal the ducts. Does wire run in conduit in a crawl space need to be rated for moisture.

Spacing is a major factor in deciding whether to use conduit. As the cable on exterior become accessible needs the conduit ditto for the portion from the inverter into the attic is accessible and was run in emt until above 8 foot and then could be considered inaccessible. Choices besides uf b wet damp location not inside conduit. The outer jacket was removed to expose the wires when run inside the emt conduit.

Knowing the disadvantages of attic install and the crawl space install.