Conductor Size Calculator

 

Select Material

Ambient
Temperature C
Number of Current Carrying Conductors in Raceway or Cable

Continuous Load
(in Amperes)

size=12 VALUE="0">

Show Load Here
(in Amperes)

Special Conditions

Select Conductor Insulation Temperature Select Termination Temperature C. OCPD and assembly is rated for Continuous Load  Circuit is Branch Circuit that supplies multiple receptacles

Yes

Yes

   

No

No

  Circuit is bundled or in raceway 24 inches or less in length Circuit is Type AC or MC cable

Yes

Yes

No

No

 

Conductor Size

OCPD Minimum Size

OCPD Maximum Size

 

Equip Grnding Cond.  Size

Equip Grnding Cond.  Size

Data

Conductor Derated
ampacity

Terminal
Ampacity

AC or MC Cable Derating Factor (if applicable)

Ambient
Correction Factor
Continuous Load Multiplier

Total Load
Terminal Load (total load)
Conductor Derating Factor for more than three current carrying conductors
Ampacity
Conductor circular mil area
Total Derating Factor

Voltage Drop for above Conductor

Select Voltage and Phase, Enter Distance, Then Click Calculate Button
(This calculator uses k=12.9 for copper or k=21.2 for aluminum)
Select Voltage
and Phase

Enter Distance in
feet from supply to load (one way)

Input from above program:  (The Load can be changed by using the keyboard)
Material conductor Size CMA of conductor Load k (circular mil-ohm ft.
     

OCPD Minimum Size

OCPD Maximum Size
      Equip Grounding Conductor Size
 
Equip Grounding
Conductor Size

 
Voltage drop
Voltage at load end of circuit
Per Cent voltage drop