$($id:$125859)$

What is the minimum length for a handhole enclosure when two four$-$inch non$-$metallic conduits are installed on opposite sides of the handhole enclosure, provided that the conductors are sized $4$ AWG or larger and are not spliced?

a$.{24}^{\text{'}\text{'}}$

b$.28"$

c$.30$

d$.{32}^{\text{'}\text{'}}$

NEC Reference

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Partial credit allowed.