After checking the total volume of your box, use this chart to determine the number of "wires" allowed based on the wire size you're using. How to Calculate Box Fill. For example, ...

You calculate box volume per 314.16(A) and box fill per 314.16(B), but make sure your 314.16(A) box volume is greater than or equal to your 314.16(B) box fill. Box volume. Table 314.16(A) seems to ...

Where more than one equipment grounding conductor enters a box, the volume is based on the largest grounding conductor that enters the box [314.16(B)(5)]. Step 2: Determine the volume of the ...

When you calculate the volume you are thinking about how many of these 1cm³ cubes will fit in the space. You represent this cubic measurement by writing a small ‘3’ at the end of the measurement.