Calculated Industries 5070-A User Guide - Manual (Page 44)

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finding Voltage Drop Resistance
What is the Resistance of 85 Feet of #2 90° C Copper conductor?
KeysTRoKe DIsPlay
 
0.
1. Set to 90º C:
  (90º)
90
0.
2. Set to Copper (if necessary):
  (Cu/Al)
90 Cu
0.
3. Enter Wire Size:
 
* aWG 2 Cu
WIRe sIZe
4. Find Resistance:
  (Wire Res) ohMs 0.2033993
WIRe
5. Find 85-foot Resistance**:
        
0.0172889
* Wire size can also be entered in Circular Mils (e.g.,
     
enters 10,380 CMILs and displays 10 AWG
Wire Size).
** Given Resistance per 1,000 Feet, divide by 1,000 to get a per
Foot Resistance, then multiply by 85.