Jbox sizing for splicing wires through a PDB

[DPW]

When attempting to size a junction box (with various sizes of conduit entries & wiring) with an installed power distribuition block(PDB), what other code sections would apply to determine the correct size to provide sufficient free space as NEC 312.7 describes?
Is there any place that states the maximum percentage of fill a junction box with a power distribution block?

Other articles that I have looked at are:
312.8 Refers to volume requirements regarding switch / OCP enclosures.
314.28 Refers to junction box's L x W for straight & angle conduit entries.
314.16 Refers to smaller box volume for wires #6 & less. These tables provide volume for devices, etc.
312.6A Refers to the terminal's bend radius, etc.


Thanks

 

[jim dungar]

The box needs to be big enough for your conduit entries, and to allow the correct wire bending space at the terminals of the PDB.

 

[DPW]

Jbox sizing for splicing wires through a PDB

Does sufficient space mean to refer to code sections 314.28 & 312.6A only without any regards for a max fill of 40%?

Thanks for the clarification.