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Calculations Box Fill Calculations
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This calculation is used for the NEC box volume as identified in the NEC 2008 314.16

Number of Wires Terminating in the Box
  Per NEC 314.16(B)(1) Enter each conductor that originates outside the box and terminates in the box.
#14#12#10#8#6
Number of Wires Spliced in the Box
  Per NEC 314.16(B)(1) Enter each conductor that originates outside the box and is spliced in the box.
#14#12#10#8#6
Number of Wires that Pass Thru Box
  Per NEC 314.16(B)(1) Enter each conductor that pass through the box without splice or termination.
#14#12#10#8#6
Number of Wire Loops Greater than 12"
  Per NEC 314.16(B)(1) Enter each loop or coil of unbroken conductor that is at least 12" in length.
#14#12#10#8#6
Internal Wire Clamps
Are there any internal wire clamps to the box?
Luminaire Studs or Hickeys
Number of Luminaire Studs or Hickeys that mount to the box or cover:
Devices
Number (Gang) of Devices to be mounted to the box:
Largest Wire Size Connecting to Devices:
Equipment Grounding Conductor
Size of Equipment Grounding Conductor that enters the box:
Allowances for #14 WiresN/A
Allowances for #12 WiresN/A
Allowances for #10 WiresN/A
Allowances for #8 WiresN/A
Allowances for #6 WiresN/A
Total Wire AllowancesN/A
Additional Allowance for Wire ClampsN/A
Additional Allowance for Luminaire StudsN/A
Additional Allowance for DevicesN/A
Additional Allowance for Equipment Grounding ConductorsN/A
Minimum Allowable Box SizeN/A

Manpower Forecasts


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No guarantees are made as to the accuracy of the calculation or compliance with local codes.  Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.

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