Table 310.16 Read, OCPD, and Voltage Drop Calculator by
electrician2.com
This calculator finds the conductor ampacity, maximum overcurrent protective device size
and Voltage Drop for branch circuits and feeders using
Table 310.16 per Section 240.4(B), and (D) and other related sections of the
NEC.
Written by Gerald C Newton December
2006. |
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Select Material
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Ambient Temperature C |
Number Current Carrying Conductors in Raceway or Cable or
bundled |
Select Conductor Size |
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Special Conditions |
Select Conductor Insulation Temperature |
Select Termination Temperature C. |
Circuit is bundled or in raceway 24 inches or less in length
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Circuit is Branch Circuit that supplies multiple receptacles
see Note 2 |
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Yes |
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Yes |
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No |
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No |
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Note: NM cable shall have a 90 degree C insulation (used for
derating) but shall be
used at the 60 degree C ampacity (334.80). |
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Circuit is Type AC or MC cable that complies with Note 1. |
If circuit is 15, 20, 30 40, or 50 amperes branch-circuit
supplying two or more outlets or receptacles See Table 210.24. |
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Yes |
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No |
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CLICK BUTTON FOR OUTPUTS BELOW |
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Conductor Derated ampacity
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OCPD Maximum Size
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Equip Grnding Cond. Size
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Maximum Continuous Load (amperes)
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Data |
Conductor ampacity
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Terminal
Ampacity
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AC or MC Cable Derating Factor
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Ambient
Correction Factor
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Conductor circular mil area
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Conductor Derating Factor for more than three current carrying conductors
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Total Derating Factor
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