Seal off in a junction box

[Mr. Pickle]

Have a client who would like to explore an in-grade junction box option.

If we have a conduit coming from a class 1, div. 2, group D location, running underground to a junction box. Can we put the seal-off inside the in-grade junction box?

Thinking of using the attached junction box for the in-grade junction box in this case. NEMA 7 not because of its hazardous location rating, but rather because it is water tight.

 

[rbalex]

If we have a conduit coming from a class 1, div. 2, group D location, running underground to a junction box. Can we put the seal-off inside the in-grade junction box?

That isn't a recognized Section 501.15 sealing method.

Thinking of using the attached junction box for the in-grade junction box in this case. NEMA 7 not because of its hazardous location rating, but rather because it is water tight.

Actually, below grade, it probably puts it in a Division 1 location as well. where sealing is per 501.15(A).