Requirements for wire nuts inside rooftop junction box

[photonboy]

Are all wire nuts in a roof j-box required to be waterpoof? Trying to find a code section specifically referencing this but no luck so far.

Thanks.

 

[petersonra]

why would they need to be waterproof if they are in a junction box.

 

[infinity]

Are all wire nuts in a roof j-box required to be waterpoof? Trying to find a code section specifically referencing this but no luck so far.

The wet location connectors are required for enclosures or raceways installed underground.

300.50(B) Wet Locations.
The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed in these enclosures or raceways in underground installations shall be listed for use in wet locations and shall comply with 310.10(C). Any connections or splices in an underground installation shall be approved for wet locations.

 

[n1ist]

The roof is underground? Is the building upside down?

 

[ggunn]

The roof is underground? Is the building upside down?

WonderWorks (museum) - Wikipedia

en.wikipedia.org

 

[electrofelon]

IF you DO NOT drill weep holes then the box will fill up with water so yes you will want the waterproof wire nuts. Drill a weep hole and you are fine with regular ones.

 

[LarryFine]

I like to orient wire-nuts with the open end down.