Calculate junction box volume requirements for PV conductor splices and connections per NEC 314.16.
Input Parameters
Results
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Volume Per Conductor
in³
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Required Box Volume
in³
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Minimum Box Size
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Ground Conductor Vol
in³
Note: PV junction boxes must be listed for the application and accessible. Use NEMA 3R or 4X rated boxes for outdoor PV installations.
Reference
Volume Per Conductor: 14AWG=2.0, 12=2.25, 10=2.5, 8=3.0 in³
Total = Conductors + Ground(1x) + Devices(2x each) + Clamps(1x)
All grounds count as 1 conductor
Per NEC 314.16(B)