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Building Wire

Box Fill Calculator

Scenario
Items Contained within Box
# of Conductors
(not including grounds)
Size
(AWG)
Volume Allowance Multiplier
Unit Volume
(in2)
Based on Table 314.16(B)
Top Box Fill
(in2)
A
Conductor Size #1
Conductor Size #2
Largest Size Conductor
Clamps
Fixture Studs/Hickey (Lighting)
Devices
Equipment Grounding Conductors (All)
12 AWG
12 AWG
12 AWG
12 AWG
1
1
1
1
1
2
1
2.25
2.25
2.25
2.25
2.25
2.25
2.25
9.00
9.00
9.00
9.00
9.00
9.00
9.00
Scenario A - Box Fill Total:
20.00
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Scenario
Items Contained within Box
# of Conductors
(not including grounds)
Size
(AWG)
Volume Allowance Multiplier
Unit Volume
(in2)
Based on Table 314.16(B)
Top Box Fill
(in2)
B
Conductor Size #1
Conductor Size #2
Largest Size Conductor
Clamps
Fixture Studs/Hickey (Lighting)
Devices
Equipment Grounding Conductors (All)
12 AWG
12 AWG
12 AWG
12 AWG
1
1
1
1
1
2
1
2.25
2.25
2.25
2.25
2.25
2.25
2.25
9.00
9.00
9.00
9.00
9.00
9.00
9.00
Scenario B - Box Fill Total:
20.00
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Scenario
Items Contained within Box
# of Conductors
(not including grounds)
Size
(AWG)
Volume Allowance Multiplier
Unit Volume
(in2)
Based on Table 314.16(B)
Top Box Fill
(in2)
C
Conductor Size #1
Conductor Size #2
Largest Size Conductor
Clamps
Fixture Studs/Hickey (Lighting)
Devices
Equipment Grounding Conductors (All)
12 AWG
12 AWG
12 AWG
12 AWG
1
1
1
1
1
2
1
2.25
2.25
2.25
2.25
2.25
2.25
2.25
9.00
9.00
9.00
9.00
9.00
9.00
9.00
Scenario C - Box Fill Total:
20.00
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Scenario
Items Contained within Box
# of Conductors
(not including grounds)
Size
(AWG)
Volume Allowance Multiplier
Unit Volume
(in2)
Based on Table 314.16(B)
Top Box Fill
(in2)
D
Conductor Size #1
Conductor Size #2
Largest Size Conductor
Clamps
Fixture Studs/Hickey (Lighting)
Devices
Equipment Grounding Conductors (All)
12 AWG
12 AWG
12 AWG
12 AWG
1
1
1
1
1
2
1
2.25
2.25
2.25
2.25
2.25
2.25
2.25
9.00
9.00
9.00
9.00
9.00
9.00
9.00
Scenario D - Box Fill Total:
20.00
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
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