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In 2014 NEC Handbook Chapter 9 voltage drop calculation example 2 the term "Circuit Length" is used. What is the definition of "Circuit Length"?

Question asked by rjcasne on Jun 23, 2017
Latest reply on Jun 25, 2017 by jhren1

In the 2014 NEC Handbook Chapter 9, Voltage Drop Calculation Example 2, the term "Circuit Length" is used.  Does this mean the physical distance from the source to the load or does it mean the length of the ungrounded conductor plus the length of the grounded conductor? i.e. 2 times the physical distance to the load.?